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She's In Love With The Rat by Kira

Format: Novel
Chapters: 23
Word Count: 86,809

Rating: 15+
Warnings: Mild Language, Mild Violence, Substance Use or Abuse

Genres: Drama, Humor, Romance
Characters: Lupin, Snape, Sirius, Lily, James, Pettigrew, Voldemort, OC
Pairings: Other Pairing

First Published: 11/14/2006
Last Chapter: 07/02/2007
Last Updated: 04/22/2013


Sensational banner made by azn_princess from TDA! So awesome!
Katie Potter is the seventeen year old, never been kissed, sister of James Potter and she is certain that she is in love with Sirius Black. However, fate’s winding road leads her, instead, into the arms of the last person she ever expected; a person who would make her life extraordinary at one moment... and then tear it to shreds. And he spends some of his time as a rat...

Chapter 22: Peter's Betrayal

Hello once again!!!! Since the last chapter was almost painfully long this chapter is going to be refreshingly short. Yet, it will be a lot to take in I think. Must stop talking before I give something away. This is by far my favorite chapter for many reasons that I will not bore you with now. I don’t know for sure if anyone actually reads my little intro things but I just want to let you know how thankful I am for your support. And whoever the lovely person was whom nominated this story for a Dobby, I thank you from the bottom of my heart and would probably give you a hug if I knew you. *Gives everyone a virtual hug* Thanks to everyone, and now on to the chapter!

Chapter Twenty Two

Peter’s Betrayal

I was in a state beyond panic. I couldn’t believe what I had just done. Had I been out of my mind? In a way I suppose I had been. But still, what do I do now. What is there to do?

“Just forget about it,” I told myself firmly. I had more important things to think about. Like Mum. This whole kissing Sirius thing would have to wait until I got my head back on straight. At this point it seemed like my life would never return to the way it was. There was, of course, no chance of me sleeping. I was beyond emotionally confused. When I am this unnerved, there is really only one thing for me to do; write. I got out a thick wad of paper and began to write. I’m not sure if the words made sense or even if they were in the right order. I just wrote anything that came into my mind. I kept going and going even though my hand cramped up painfully. I kept going until the sun came up. I kept going well into the morning. It helped massively. For that precious strain of time I hadn’t thought of the mess that was now my life and the world around me.

I probably would have kept writing forever, but there was suddenly a knock at the door.

Remus was at the door; sunlight spilled into the room when I opened it. Once look at him caused me to gasp. I had seen Remus look bad before. I had seen him lower than I’m sure he ever wanted anyone to see him. But nothing compared to the way he looked now. It looked as if something deep inside him was eating away at his appearance. Any light that had remained in his eyes had been diminished, and his hair was plastered to his forehead telling me that he had not bathed this morning or the night before. He was trembling even though it was a rather warm autumn day. He looked on the verge of tears and his gaze seemed to stare right through me.

“Remus?” I asked, concerned. I held out a hand to him, to guide him over to the couch. Remus didn’t take my outreached palm, but continued to stand in the doorway with an indescribable expression on his drawn face.

“Where’s Sirius?” his voice, cracked when he spoke. My heart thudded in my chest. Did Remus know what I had done? Is that why he was looking so…different?

“I don’t know,” I responded shakily, hoping he would drop the subject.

“He came here last night then?” Remus asked, his voice weak, yet sharp.

“Yes,” I said, instantly wishing I had lied and told him that I hadn’t seen Sirius at all last night.

“Then you must know where he is,” he persisted, taking a step into the apartment.

“I’m sorry,” I answered, wondering why Remus’ voice even sounded different. “He came over for awhile but left fairly quickly. Nothing happened.” I hoped Remus couldn’t sense the guilt in my voice.

“You HAVE TO KNOW WHERE HE IS!” Suddenly Remus was yelling as I had never heard him yell before. He flew to me and grabbed me roughly by the shoulders; his eyes blazing.


I was too scared and shocked to cry as I stared at Remus in innocent confusion.

“I don’t know where he is!” I stuttered; panic stricken. “Maybe ask James or Lily, or…

“THEY"RE DEAD!" Remus bellowed at the top of his lungs. “THEY”RE DEAD, THEY”RE ALL DEAD!”

All I could do was shake in Remus’ grasp. I couldn’t function, I couldn’t think, I couldn’t even see straight.

Finally, Remus relaxed his hold on me and backed away from me, looking at his hands in horror.

“God…” he shuddered, backing to the wall and sliding down it; his hands gripping his hair. “I AM a monster.”

I didn’t know what else to do, so I staggered to where he was sitting and slid down next to him. His head drooped onto my shoulder and we both sat there in silence; harsh and painful silence.


An hour later, both of us managed to discover our voices again. Remus explained to me in a numb voice everything that he had heard about the previous night.

“How could this have happened?’ I asked, biting my nails in my supreme agitation.

“Sirius betrayed them to Voldemort,” Remus replied. “It’s the only way.”

“He wouldn’t do that,” I answered firmly. “There’s no way.”

“But he wasn’t with you the whole night,” Remus said sadly. “He had more than enough time to relay their location to Voldemort.”

“What about Harry?” I asked, my eyes welling up again at the thought of the baby boy.

“Dumbledore thinks he should be sent to his aunt and uncle,” Remus answered.

"What about me?!" I protested, angrily. "I could take care of him."

Remus shrugged helplessly. I sighed, and tried not to think about how much Harry looked like James.

“I can’t believe that Voldemort is gone. How is that possible Remus? How?”

Remus didn’t answer the question, but told me that he had to go. He was leading the search for Sirius.

“I have to find him, Katie,” he murmured. He bid me farewell and I was left alone again.


When I opened my eyes the sick feeling in the pit of my stomach had not ceased. I had fallen asleep on the floor; in a strange place that I couldn’t remember choosing to lie down upon. Everything in my mind seemed to be hazy and pushed together. If someone had come up to me and asked me my name, I probably would have had problems. The hard floor had given me a throbbing headache as I pushed myself to my feet. When I had righted myself I headed for the kitchen for a glass of water, hoping something simple like water might help me feel better. As I passed into the kitchen I realized that there was a murmuring of voices coming from the next room.

Forgetting the glass of water, I moved silently to the door and pressed my ear against it. I recognized the voices instantly, having spied on them before, as Peter and Nott. Had they not seen me when they came in? I had been in a place that could be easily missed.

“What are we going to do?” Peter was saying. “What the hell are we going to do?”

“Don’t panic,” Nott responded. “We’re not even sure what happened.”

“He’s gone!” Peter snapped. “I after I told him the location he went, but he never came back!”

“They say that the Potter boy did it,” Nott, growled, and I could imagine him balling his hands into angry fists.

“How the hell is that possible?” Peter asked. “He’s only one!”

“I don’t know,” Nott continued. “But I do know that we have to get out of here. Before anyone discovers who we truly are.”

“I’ve got my trail covered,” Peter responded, in a boastful and condescending voice. “Black will take the fall for what I’ve done.”

I clapped a hand to my mouth to keep from gasping.

“We still need to get out of here,” Nott said. “It would be easier to avoid questioning of any kind.”

“Fine,” Peter said. “When do we leave.”

“I thought you didn’t want to leave your girlfriend.” Nott had a way of spitting the word “girlfriend.”

“She doesn’t love me,” Peter answered sharply, as a tear rolled down my cheek. “She loves Black. They’ve been going behind my back.”

“I told you having her in your life was dangerous,” Nott responded; his voice taking the arrogant tone Peter’s had previously held.

“She wasn’t dangerous,” Peter answered, a hint of hostility in his voice.

“Oh please,” Nott answered. “You were so blinded that you couldn’t see that her mother was a problem. Luckily I had the guts to take care of that little problem.”

“Is this thing supposed to sting like this?” Peter asked, and I found myself cracking the door just a tad to take a peek. Peter was sitting across from Nott with his left arm extended; the sleeve rolled up.

“So you finally got it eh?” Nott replied.

“Yeah,” Peter answered, a hint of pride in his voice. “After I gave up the Potter’s location…” He paused on the word “Potter’s” slightly. “The Dark Lord thought I deserved it at last. He gave it to me before he left. Of course by the time I’ve finally reached potential in his eyes he’s defeated by a one year old.”

Quick as a flash Nott grabbed Peter’s arm tightly and twisted it violently. Peter gasped in pain; his eyes scrunched shut.

“Do not speak of our master in that way,” Nott growled. “We must work together to find a way for his return. But we must go before the Aurors come to question you.” He let go of Peter’s arm, who drew it back into his body, rubbing at the pain.

“Won’t that be suspicious?” he asked, still holding his throbbing arm. For a moment I caught the sight of the Mark burned into his skin like a revolting tattoo; a skull with a hideous snake protruding from its mouth.

“Everyone thought Black was the Potter’s secret keeper,” Nott shrugged. “Hopefully everyone will be more focused on finding him.”

“And putting him where he belongs,” Peter added darkly.

I couldn’t bear to listen to anymore. I slipped away from the door and backed myself into the kitchen, wondering what the hell I was supposed to do next.

Leave. Go where? Home? No. I had to tell someone what I heard. But what about Peter? What about Sirius? My brain buzzed as I stood, absolutely still in the kitchen. I felt as if I would never move again. It was Peter. He killed my brother. He knew that Nott had killed Mum. He had killed Lily. It was his fault. How could he have known their hiding place? Sirius was the Secret Keeper, not Peter.

Suddenly a massive, grey owl flew into the room, scaring me to death. It had a small, ratty piece of parchment tied to its leg, and it ruffled its feathers loudly when I went to remove it. As soon as I had the small scroll, the owl launched itself back into the air and disappeared. I quickly unrolled the message and started to read.


I hope you are still here and able to receive this letter. I don’t know how to begin to explain what has happened, but I don’t know anyone else who will listen. I am not responsible for what happened to Lily and James. I know that this is impossible for you to believe. Remus is beside himself with anger and grief and I know he will not listen to me, he wants nothing more than to bring me in. I’m in trouble Katie. Remember when I had lunch with Peter. I asked him that day to take my place as Secret Keeper. I thought it was for the best. I thought Peter would be the least likely of us to take the position, hence giving everyone a little more security. I’m sure me blaming Peter for last night’s events is the last thing you want to hear or accept. Below is my current location. It is a great risk revealing my location like this so I’m hoping you understand that I’m telling you the truth. I’m not asking you to believe me entirely, I’m just asking you to believe me enough to come meet me at the above location. I need to see you.


I took one look at the location under Sirius’ name, stuffed the letter into the pocket of my fleece and hurried out the door; without ever looking back.


It took me awhile to reach my destination. The streets were full of celebrations. They were all cheering the downfall of Lord Voldemort. I could do nothing but shake my heads at them. Did they not know who had been lost last night? Did they not know what had happened? How many lives had been destroyed?

“Isn’t it wonderful?” a woman had said to me; pulling me into a hug as I passed. I had given her a weak smile before pushing onwards. Sirius’ location was in a quiet, little neighborhood, thick with trees and soft grasses. There was a small park in between two rows of houses. It was a little playground and a few colorful flowerbeds. I was to meet Sirius on one of the many small roads that twisted through the park.

When I reached the proper place I immediately turned around, searching for him.

Suddenly, I heard a loud bark. I turned to see a huge black dog barreling towards me. I was about to move out of the way when the dog’s shape began to melt away; until it was Sirius standing in front of me.

“I never thought you would actually show up,” he said, sounding truly shocked.

“I had to,” I answered, talking very fast. In a flash I revealed everything to Sirius that I had overheard.

“He did everything,” I gasped, tears coming up again. “He did it all. And I not only believed that he was good, I stopped believing my own thoughts and instincts. How could I have believed in that awful little rat!?”

Sirius hugged me close. “Because you love him. And he lied. We all trusted him when we should have realized something sinister was going on.”

“I just don’t understand,” I said, my hair sticking to my stream of tears. “He’s such a good person. I don’t understand how he could have done this.”

“I know, I know,” Sirius answered, but there was an edge in his voice. I knew he didn't believe Peter was a good person. “But if you heard what you heard, you need to tell someone. Not only will it clear me, it will set a lot of people straight.”

I kept silent.

“Katie, you know you have to come forward with this information.”

More silence. Sirius stared into my eyes, begging me to confirm.

“I know,” I cried. “I know I have to.” I was about to keep talking when a familiar voice broke into our conversation.

“Well, well, well. Picking up from where you left last night I see?” I dropped my hug of Sirius and turned to find Peter standing across from us with his arms folded. Sirius’ eyes darkened instantly.

“You son of a…” he started forwards, but Peter’s hand shot into his robes and out came his wand.

“None of that Black,” Peter snapped, his voice calm, his eyes terrible.

“Peter,” I tried desperately. “What…”

“Am I doing here?” Peter finished for me. “Well, you never were any good at spying behind doors and you aren’t very hard to follow. I knew you would lead me to him, so I decided to make absolutely sure that my trail was covered.”

“You were never captured by Death Eaters were you?” Sirius snapped, his eyes still glowing with hatred, even though Peter’s wand was pointed directly at him. “Instead, you joined them!” Sirius’ voice broke as he continued with tears of pure anger. “You were our friend! How could you?!

Peter’s smug expression faltered for just a moment.

Maybe I could get through to him. My palms were glistening with my fearful sweat as I struggled to find my voice.

“Peter, please,” I gasped, and Peter’s eyes moved over to me. “We want to help you. Please…please stop.”

Peter looked as if he was about to yell, but instead his voice stayed smooth and arrogant; tinted with ultimate dislike.

“Don’t waste your breath on more lies. I saw you kiss him. It’s just like you always wanted. You toyed with my emotions, made me think that you loved me. All along it makes sense that you loved someone like Black instead of someone like me. I only did what I did to make sure that we were safe; so we could move up in the world. I did it all for you.”

I gasped, putting a hand to my chest. My breathing was becoming ragged. I couldn’t believe all this was happening.

“You didn’t do this for her,” Sirius said from next to me, his eyes now dry. “You liked the power and the secrecy. For once you were doing something different, instead of being the spineless little rat you usually were. Unfortunately you turned out to be the worst possible version of yourself. You betrayed all the people who have ever loved you.”

“You have no idea of the power I’ve obtained.”

“Who are you?!” I said, overwhelmed with the intense emotion and shock. “I used to think of you as a person who would never, ever hurt me…and now. I can’t love, or even tolerate the person you’ve become.

“You took her from me,” Peter muttered darkly to Sirius, not hearing my words. “And you will pay.” Sirius glared at Peter but watched him carefully. Peter elegantly reached into his pocket, with his wand-less hand and pulled out a knife; gleaming in the sunlight.

“You will rot in Azkaban for the rest of your life.” I watched the knife with wide eyes. What was he going to do?

Instead of coming closer he put the knife to his hand. He screamed loudly as he dug the blade deep into his finger. I couldn’t even blink as I watched blood stream down his hand, the finger falling to the ground. In the time that Peter had cut off his own finger, Sirius had managed to pull his own wand out of his pocket.

“And now I finish this,” he growled, raising his wand.

Our voices must have carried across the park and into the streets because a small group of Muggles had gathered at the edge of the park, pointing and whispering to themselves.

“I better make this believable then,” Peter responded, a sick smile on his face. He took a look at the Muggles before speaking.

“James and Lily Sirius?” he yelled loudly. “How could you? They were our friends!”

Sirius roared with anger and stumbled, losing his footing. Peter smiled again. His eyes locked with mine. That last look…it was petrifying.

“Goodbye,” he whispered. An awful snarl formed on Peter’s face as he began to speak an incantation.

“He wouldn’t!” my brain screamed. I had to stop him. I could stop him. I rushed towards him as the last syllable of the spell, unknown to me, left his lips.

There was a deafening explosion and I felt my body being lifted in the air. I landed on my back, my head striking something hard behind me. My eyes rolled back in my head as a dull pain spread through my body. There was screaming and crying nearby, but my eyes were clouded by the smoke from the spell. My head felt oddly light and out of place. I couldn’t see Peter but the next thing I knew Sirius was next to me.

“Katie…oh god,” he gasped frantically. I could barely make out the outline of his face through the haze.

“I’m alright,” I said, even though the pain in my head was getting worse.

“No, you’re not,” Sirius moaned. “I’m going to get you a Healer. Just hold on a little longer.”

Hold on? What did that mean?

“Where’s Peter?” I asked, for some reason still praying he was safe.

“I don’t know,” Sirius replied, squeezing my hand hard.

“We need to help him Sirius,” I said dizzily. “He needs our help. We can do it. Promise me, you’ll help him.”

I never heard Sirius’ response. Dark shapes crowded around him and someone was pulling him away. I tried desperately to hold onto his hand but my fingers had no strength left. I heard him screaming my name but he seemed so far away… I seemed so far away…I

had to smile though. It didn't hurt anymore. All the pain that the last days had held seemed to melt away. I could still hear voices around me. And then there was light coming, a warm and comforting light. I just had to smile.


Remus Lupin arrived on the scene five minutes later. What a disaster. Muggles had been injured. Most needed modified memories, and there was a gaping hole in the pavement in the park. Remus hurried along what was left of the road offering help to the injured. He performed a few healing spells and gave sips from the emergency vials in his robes.

“There’s somebody over there Lupin,” a female Healer called to him. “There was nothing I could do.”

Remus pushed up his sleeves and rushed off to where the woman had pointed. He could try, at least. He saw the dark shape of the girl laying on the ground on her back. From this distance Remus could see that the back of her head was smashed against a rock, and there was a large pool of blood nearby. His heart rate got faster and faster as he got closer and closer.

“No, no,” he moaned in agony when he saw who it was on the ground. Not Katie too. Please God not Katie too.

Remus threw himself down to his knees by her body. He desperately cast spell after spell, praying fiercely that it would have a result. After one spell Remus noticed her eyelashes flutter.

“Katie?” he called.

“Sirius…Peter…” she breathed, barely even whispering. Remus leaned in closer, grabbing Katie’s hand, begging her to stay.

“Don’t leave me,” Remus gasped, crying bitterly. He brought Katie’s hand to his lips and kissed it quickly.

Katie’s mouth turned up into a small smile.

Remus was still holding her hand when she died.


See you for the final chapter.