Choices
The next few weeks were hell. Severus or the Marauders had to help me everywhere I went.  After three weeks of this, I finally healed enough to start learning to walk on my own. This was a very painful and very slow process.  Whoever was walking with me was excused from being late for class.  I did not enjoy this though Sirius and James liked being able to arrive late for classes. I mostly stayed in Houses United because it was easier than going up and down stairs. One of the days we were sitting there, I brought up becoming blood sister's to Lily.
"What would the potion do?" Lily asked.
"It would make me and you of the same blood. We would be real sisters." I said, Severus pulled out some parchment and handed it to Lily.
Lily took the parchment and looked over it. "I'd love to."
Lily was smiling. It took a lot to mask my shock. She didn't ask if it was dark magic, she just agreed. Severus smiled. Though he didn't know why, he knew this was really important to me. I explained that I really needed this done for things in the future. I was actually pretty shocked Severus had not asked about my reaction to seeing Peter when I first arrived back in this time. I still had to find a way to find that rat in my time. 
"Would you like to help make the potion? " Severus asked.
Lilys eyes lit up, "I'd love to!"
I smiled at her,  we would keep the fact that this was dark magic away from her. "It takes a month to brew, we should get started."
After that we got busy on the potion. The Marauders were not happy to hear I would be busy with another potion, however, I explained this one was different because it was already invited. This seemed to cheer them up a bit. Though I was able to walk on my own, Severus and the Marauders continued to help me. Most people were amazed to see the five boys working so well together.  One very unusual morning, I decided to sit with Severus at the Slytherin table.  James and Sirius also sat with us. Remus wanted to, but Peter was to scared so he walked Peter to the Gryffindor table and sat with him.
"Prongs, Padfoot, I'll be ok." I stated, seeing their disgust at sitting here.
"We know you will,  but your first class is charms and Severus would be late if he helped you to class." James said.
"I can walk myself to class." I stated, annoyed.
"You should be happy Shadow, we actually agree with your Slytherin lover for a change." Sirius said and I gave up on getting them to go to their table.
"Why are you blood traitors sitting here anyway?" Bellatrix asked, her voice laced with hate.
"I'm interested in joining the cause." I stated, choosing my words carefully.
"They will not like that." Nott stated, nodding his head towards James and Sirius.
"This isn't about what they like, it's about what I want." I said and Severus squeezed my hand under the table. I knew this meeting was important to him.
"We know Severus can create potions for the cause, but what can you do?" Lestrange asked.
"I challenge you four to a duel." I said, looking at Bellatrix, Lestrange, Nott and a older Slytherin I knew to be Lucius Malfoy.
"When?" Malfoy asked. I smiled, I knew he was listening in.
"Tonight. Meet me outside the Forbidden Forest, behind Hagrids cabin, midnight."
Bellatrix laughed, "You can't even walk."
"Then it should be easy. Four against one and that one is crippled." I said smiling.
"You can't have any help." Nott stated, eyeing Severus, James and Sirius.
"I won't need any, besides, I'm not a Slytherin, I'm a foolish Gryffindor." I smiled and stood up.  James, Sirius and Severus followed. As soon as we were out of the Great Hall,  they cornered me.
"Are you insane! They'll kill you!" Severus cried.
"Clearly you have no confidence in me."
"You're injured!" James yelled.
"Which is the only way them four even stand a chance against me."
"Amy, I understand nothing we say will stop you from joining them, but can't you wait until you're healed." Sirius said.
"I'm trained in war, it's the one thing I'm really really good at. I'll be fine." I said and started walking towards my charms class.
The Marauders nor Severus spoke to me much that day. When they did speak, it was them trying to talk me out of going through with this duel. I refused to back down. If I was going to protect Severus I had to join the Dark Lord with him. The Marauders understood this and respected my decision, they just wanted me to wait till I was completely healed. I decided to go talk to Chris. While walking to his room, I realized I missed him and Sherry. Since I started school, I wasn't spending any time with them.
When I got there, Chris and Sherry were cleaning up, preparing for tomorrow's lessions. I decided to help them and started placing things in their rightful place. After the room was cleaned, we made our way to their chambers and I sat down on the couch. "I'm dueling four Slytherins tonight."
Chris looked at me, a bit worried. I was not ready for him to agree with my friends. However what he said surpised me "Amy, I thought you were better then that. Don't fall for these silly house rivalries."
"Oh Chirs! You know me better then that. It has nothing to do with house rivalries. I'm joining the Dark Lord." I stated.
"Why would you do that?" Sherry asked, pouring me some coffee.
"Severus has decided to take that path. He wants the power the Dark Lord has promised his little servants. I feel I can protect him and the others better if I'm with him." I said.
"This Dark Lord is no joke Amy. Be careful on that side and don't get caught." Chris said.
I smiled. I knew they would support my decision. "I'm actually rather excited. You know, I haven't been to war since I started school. I feel lost without it."
"So what about your other friends? How do they feel about you joining the other side?" Sherry asked.
"They understand my reasons and support my decision. James and Sirius were there when I talked about it with the Slytherins. The only problem everyone has with me at the moment is that I haven't fully recovered from Moonys attack."
This caused both Chris and Sherry to laugh, then Chris said, "Amy you must understand things from their point of view. They don't understand that you are trained to ignore pain and fight on. They have never seen you truly battle against all odds. The only fight they've ever seen you in is one against a werewolf and you almost died."
"Yes, but only because the werewolf bit off most my stomach. That would kill anyone. Most would not have been able to carry on as I did afterwards." I said.
"These children are innocent Amy. They don't know war like we do. Chris and I will show up tonight to heal the Slytherins and to give you pain potions after. I wish you luck on proving yourself good enough to join the Dark Lord. Be careful." Sherry said. I smiled at her then hugged both of them.
"I don't think I've ever told you this before, but I love you both." I said and walked out, leaving two shocked people behind me.
When it came time for the meeting with the Slytherins,  Severus and the Marauders followed me out. Chris, Sherry and the Slytherins were waiting for me. Chris hugged me and whispered "Have fun." Then faced the others. "I'm going to put up a magical barrier around you five. No spells will be able to come out of the barrier nor will spells be able to come in. You may test this if you like."
"That includes the killing curse." Sherry added on as Chris placed a barrier around Bellatrix, Lestrange, Nott and Malfoy and myself. I shot a simple boil jinx at the barrier. It hit it and exploded. I looked over to the Slytherins who tried their own spells. Chris and Sherry shot a few spells from their side of the barrier and they exploded but didn't cross through. Once the Slytherins seemed satisfied, the battle began.
Curses were coming at me from all sides. I was doing fairly well at blocking, only getting hit by a stinging hex so far. I stood in the middle blocking and observing. Bellatrix was the wildest. She shot spells carelessly. She needed to be taken out first. Lestrange was directly across from Bellatrix I smiled. Malfoy shot a killing curse at me, making the Marauders and Severus yell and scream. I side stepped the curse and got hit by a leg locker curese. I smiled. The Slytherins were laughing and taunting me, thinking they had got me down. I could tell Severus and the Marauders thought the same. Bellatrix sent a body bind curse at me, I hopped to the left and watched it hit Lestrange. After he was down I hit her with the same curse and quickly sent another curse at Malfoy. He fell to the ground in a daze. I smiled and faced Nott, the one I realized was the weakest of the group.
"Tell your Dark Lord, he has a worthy follower awaiting him." I said and sent the body bind curse at him.
Chris let the barrier down and Severus ran and pulled me into a hug. The Marauders hugged me shortly after, then Remus said, "What's wrong with Malfoy?"
"He's in a happy place." I said, laughing at the drool coming out his mouth.
"She used a hallucination curse. He's seeing things a bit differently then we are." Chris said.
"Amy, get over here and let me check your wounds." Sherry said and I walked over to her. The adrenaline was wearing off and the pain was coming out. She gave me potions and deemed me healthy enough to make my way back to the school. I walked over to the Slytherins and took the curse off Malfoy, who looked around confused then huffed and stormed off.
Chris and I let the others go and they followed Malfoys lead. Before Bellatrix left she said, "I'll let the Dark Lord see this fight and it will be for him to decide."
"Amy! You are insane." James said, scowling at me.
"I won. That's all that matters right now." I said as Severus and Sirius got on each side of me to help me back to Houses United.
"How did you fight, even though you are so hurt?" Remus asked.
"I was trained to ignore pain and carry on. At first it was hard, but then that adrenaline rush hit and I felt no pain, just excitment." I said.
"Why did you only block at first?" Peter asked.
"I needed to learn my opponents. Malfoy would have put up a nice duel if I wouldn't have let him think he was winning ahead of time. Bellatrix was careless, so I used her to take out the next one that would have put out any type of challenge. Once Lestrange was down, it was easy. Bellatrix is dangerous though. Her carelessness makes her a very dangerous opponent unless you know what you are doing. Nott was the weakest of the group. He was easy to scare and take down."
"Amy, you are my hero." Sirius said and I laughed.
"War is my thing. You guys have to constantly correct me on how being in school goes, but war, I'm an expert." I said as I saw Jessie running over to us.
"Amy that was awesome! I watched from Hagrids hut. Why were you fighting them?" Jessie asked all in one breath.
"I'm joining the darkside." I said smiling at her.
"Because they have cookies?" Jessie asked, causing the others to be confused. Chris laughed.
"Of course that's why." Chris said, rolling his eyes.
"You know I love my cookies." I stated and laughed at the confused looks on the Marauders and Severus's face. "It's an American thing. Don't worry about it."
Once we made it to Houses United, the Marauders and Chris and Sherry left. I followed Severus to my bed and we laid down. Lily was already asleep and my guess was Alice was with Frank or in her dorm. Severus and I cuddled up to each other.
"You didn't have to join me." Severus whispered.
"Severus I love you. I know how dangerous war is. I know what you are heading in to. I'd rather be beside you the whole way."
"I love you Amy. I wish Lily was as understanding as Potter and his friends."
"I do too. They wouldn't be so understanding if they didn't trust me so much. I wish Lily held that much trust in us. She's coming around though. Give her time."
"I was actually surpised by them. They really care about you."
"They are my brothers in all but blood. They are not bad people Severus, they just have some growing up to do is all."
"I'm glad you've made them see that." Severus said and kissed me.
The next few weeks were pretty interesting for me. Severus seemed to be really touched that I would follow the dark path with him and it made us closer. Bellatrix and the other Slytherins were being nice to me and welcomed me on the mornings I decided to sit at the Slytherin table. I still had more proving to do to the Dark Lord, but I had time. He wouldn't let us join until 6th year. I was ok with this, though Severus was a bit disappointed. Lily kept questioning me on why the Slytherins were being so nice. The Marauders saved me on that one saying they finally accepted Severus and my relationship.  The Blood Sisters potion was coming along nicely as well.
Three weeks after that night, Frank and Alice showed up at my nightly trainings,  which the Marauders had also joined. Frank looked angry,  Alice looked sad. I stopped running and walked over to them.
"Frank, what took so long, we started a hour ago." I asked.
"Amy, you're joining the other side." Frank stated.
"I am." I said, no emotion showing, but on the inside I was worried. I knew joining the Dark Lord would make me lose friends but I wasn't actually ready for that.
"Why?" Alice asked.
"I have my reasons." I said.
"How could you!" Frank whispered. Though it was a whisper, the anger in his voice was clear.
"Alice, can I speak to Frank alone?" I asked. At her nod I led Frank away from the others to a isolated area close to Hagrids hut.
"How could you do that to us Amy? Severus I expect it from, but not you!" Frank said.
"Why? Because he's a Slytherin?" I asked, feeling my own anger stir up.
"No, not because he's a Slytherin, because of his obsession with the Dark Arts. Despite knowing more about your past then we do, he's still so wrapped up in them."
My anger melted. Frank was right. Severus knew of the torture I went through from the Dark Arts. The others only knew I was tortured, not how badly like Severus did. "Frank, let me ask you, if Alice was dead set on joining the Dark Lord, what would you do?"
"Alice would never!"
"You're missing my point."
"I'd talk her out of it."
"And if you couldn't?"
"I'd follow her, I'd protect her no matter what."
I stared at him for a moment and his eyes lit up in understanding. "That's why the Marauders are ok with it?" I nodded. "Be careful Amy."
"Don't think badly of Severus. He's a good guy, just a bit confused right now. In time he will realize how much of a mistake this is. The real question is, when he does, can I count on you to still be his friend? To still trust him?" I asked.
Frank was silent for a moment, "Yes. You're right. I can see that in him to. I just hope he realizes it before something really bad happens."
I shook my head sadly. "I already know what changes his mind. The worst thing that Severus could do, he does. When he realizes what he's done he runs to Dumbledore for help. Of course I follow him. Dumbledore helps the best he can, but it isn't enough. In my time, it's been almost 11 years since this thing happens and he still regrets it, still blames himself."
"Can't you just tell him what he does so he doesn't do it?" Frank asked.
I shook my head again. "This isn't something I can change. Like I explain to James and Sirius, let's say I knew Severus died in the future, and I saved him. This would not stop his death, it would just by him a little time and even more people who originally didn't die, would die. You can't change the past sweetie, only learn from your mistakes."
Frank was silent a for a while before he asked. "Are Alice and I ok in the future?"
"You wasn't when I arrived back from last year. However, Severus and I were able to help you. I'm sad to say you're not as understanding towards Severus as you just promised to be. However, now you and Alice are happily married with a wonderful son. Also, you and Severus are still friends."
"You made me see reason?"
"No, your son did." I said and walked away. I didn't want to discuss the future, I didn't even want to think about it. I kept my time frames apart for a reason. Frank called me back.
"One more question, what's the real reason you want to become blood sister with Lily?"
"So I can adopt her son." I stated and continued on my way back to the others.
Frank soon joined us and we all started training again. Alice was a bit confused but she started jogging and Frank stayed with her, encuraging her.