Summary;
When Bella was left in the woods by Edward, in NM, She discovered a part of her past that was hidden all her life. She was Harry Potters Twin sister. Pushed away to a foster family until it was safe to return, Harry was supposed to go too a month later so there was no suspicion but when You-Know-Who murdered their parents she was left in their care. How will she survive with all the attention? How will she survive when the Cullen's come back and her new friends keep secrets?
(This is set in new moon but moved back to just before summer? So Edward leaves at Bella's birthday which is Harry's, in July, also Harry and Bella are younger. 16 ish maybe more maybe less.)

Pairings: Slight Bella/Edward, maybe Bella/Ron, Maybe Bella/Hermione, Maybe Bella/anyone.

It's you lovelies choice really.

*with a wand pointed in my back* I can honestly say that I in no way...Oh I can't do it! I own twilight and Harry potter! *gets killed by the wizard holding the wand*

"You don't want me?" Bella asked softly shaking slightly and swaying as she gently wrapped her arms around herself. Trying to hold herself together as Edward stood the opposite side of the small clearing to her. Half of her mind convinced it was just a joke.

"No." His word seemed so final, and in the time it took her to blink away the tears he had disappeared. Love. Life. Meaning. Was all over. Bella gripped onto herself tighter as she fought back tears.

"Edward! You don't get to do this to me!" she shouted and ran after him not knowing how but she thought she was following the right path. She bit her lower lip and stormed through the forest. Grabbing onto every tree that passed. Trying to ascertain whether they were real or not. Whether she was in a terrible nightmare, and that she'd wake up with Edward singing to her...

It all felt too real and of course all to soon the little hope of it all being a nightmare faded as the rain started and she pined softly, she could feel herself getting cold and she couldn't understand.

"Why can't I wake up? What's wrong with me?" she shouted as she leant sideways against the tree nearest and started crying into it's moss covered bark. And she gripped onto it for dear life willing it to turn into Edward and for him to suddenly return telling her he didn't mean it, that he could never live with out her. That he was there for her.

"I love you..." she whimpered into the bark as she sank down to the ground and lay there in the foetal position curled around the trees' root. She started sobbing biting her lip as she tried to control herself.

"He's gone...he's really gone isn't he?" she whispered asking herself the question as she lifted her hand and bit it hard and sharp to see if she could break the skin and of course obviously. Nothing happened and she groaned fresh tears mingling with the rain that battered her face.

"Let me die...he's gone...he doesn't want me..." Bella chanted rocking herself on the forrest floor, that was slowly getting more and more muddy she laid her cheek in the mud and closed her eyes. She didn't care about how cold it was, or that for the first time in a long time no one was going to save her. All she cared about was that the one person she trusted and loved apart from Edward hadn't even said goodbye. Alice never even said that to her.

Harry POV

"Charlie? Is my sister here?" I asked the man who opened the door. I had only just heard of my sister living here, in fact i didn't even know i had a sister, but I was glad. I didn't know whether to be proud that my parents thought to protect her, or upset because she had been kept from me. Isabella Marie Potter, turned Isabella Marie Swan. I wondered if she had had a better life than me. Had she been happy?

To give Charlie his credit he didn't even blink when he sighed and then smiled at me obviously knowing who i was. Did i really look that much like her? That he could recognise me instantly? Or was it because he just knew who I must be. I knew he wasn't magic so it couldn't be that.

"You must be Harry. You look so much like her... Sorry, I don't know. She may be out with her boyfriend, or with his sister." His tone of voice matched my thoughts to that. I didn't want her to have a boyfriend, she was my baby sister, even if she was my twin, and I didn't want her to have a boyfriend. Why were they out in this rain anyway? Or was this normal, I doubted I could live here, maybe i would have to acclimatize like she had to. I shuddered at that, no one should be made to do things they shouldn't have to.

"Do you know where? I need to see her." I practically begged as I made my way inside as I gazed at Charlie, surely he could understand my need for my sister, surely he would at least see the need in my eyes for this... To know she was ok with that, ok with me, I needed her to be ok with it. Charlie shrugged then looked across to the table... as if wondering if she left a note, he paused and then I saw it too. The note in an elegant handwriting, it couldn't have belonged to my sister, it was more like Hermione's hand writing than mine...

Dad,
I've gone for a walk in the woods with Edward,
I'll be back soon,
Can you phone for Pizza, plain with tomato sauce and apple chunks? I don't think I'll want to cook after this...
He seems upset...
Bella x

I stared at the paper and I could almost see the confusion as Charlie walked past me and picked it up. Maybe it wasn't the way she spoke or wrote. I had to agree with that assessment. I doubted anyone wrote like that. Well unless you counted Hermione.

"Harry, can you go look out for her? I don't like this. There's something odd about that boy." Charlie asked, not that he had to I was glad to help my sister. Anything to help. I nodded and walked out shoving my hand into my pocket to grasp my wand as I walked out into the rain to find Bella.

Flashback

It was the last day of term when I heard the news. Professor Dumbledore had pulled me aside after breakfast his hand clasping my arm with a strong hold, and he seemed intent on something. He took us to a private room and spun to face me.

"Harry there is a matter I need to discuss. You have a sister. She was taken away to America before Voldemort came. She is still there. You need her harry. She's in danger and only you can help her." His urgent voice sent me into my mind. I had a sister...impossible unless we were twins no other timelines added up. Why did she need me?

"I have to find her." It wasn't a question, but a statement, I had to help her. No matter what the cost it was to me. I didn't know why but i needed to know her, she was my last living relative.

"When you return go to the burrow harry. Mrs Weasly has been informed." I looked at him and nodded before exiting not talking to anyone as i made my escape.

Flashback ends.

I ran through the forest remembering not to use lumos in this dark place, i knew logically no one would be here apart from Bella and her boyfriend, but she wouldn't know, and he would think us freaks. I would also get badly punished and that wasn't good.

I rounded a corner and took a sharp intake of breath as I fell down a steep part of the hill, I tried to scramble to my feet.

I saw her then, her dark hair so much like mine, brown eyes, like James...the same face shape as lily. She was beautiful. The image of both out parents, I almost envied her in that moment, she was both exactly. It was then that i realised she was huddled over herself lying on the ground in the foetal position, whimpering and rocking slightly chanting the same few words.

"He's gone...Please don't let him be gone..." she whimpered over and over again, and i growled, moving closer and rubbing her arm, she seemed not to notice. Her tears became more and more violent and I silently cursed in the back of my mind who had hurt my sister.

"It's ok Bella. I'm here. I'll be here, all the time. I'll protect you." I promised as I picked her up and her hands automatically grabbed at my shirt as if i made her feel safe, her head rested against my shoulder and her knuckles turned whiter still clinging to me. That felt good. I made my little sister feel safe, she was safe with me.

"Why wasn't I good enough?" she asked half way through her monotonous ramblings and I knew where ever I met him, I was going to kill Edward Cullen, I kissed her forehead trying to push away all the bad thoughts. I held her tightly as I made my way back and lay Bella on the floor before the fire place and got the floo powder out of my pocket, i needed to get her home – to the burrow – she screamed when i let go and started thrashing around and I held her hand again upset that she thought I would leave

"I have to take her to the Weasly's they can help her." I said looking at Charlie as he walked in, I could see how much he cared about her but I needed her, i needed my sister to be safe. He nodded and I smiled using the floo powder and I picked up Bella before stepping into the fire and she relaxed further.

"The Burrow." I said simply and tightened my grip on my sister as the living room in the swan household disappeared.

Hermione POV

We had been waiting since midnight to hear from Harry. I still couldn't believe he had a sister. I wondered for a while what she was like. Whether she was smart, or scatterbrained. Maybe she was just like Harry. I shuddered at the thought not two of them please. Then I mentally hit myself, I would accept her no matter what, she needed good friends in this world.

"Hermione! Ron!" a soft voice called and I recognised it instantly as Ginny, she seemed slightly amused and then i heard her shriek and Ron galloping down the stairs, I shoved my book away and ran out jumping down the steps, and almost into Ron who had stopped dead.

"What happened to her?" Ron growled softly and I leant around him to see Harry holding a girl who looked almost dead. Her eyes were closed and she kept whimpering words that made no sense and Harry's face mirrored Ron's words.

"Her boyfriend. He left her in the middle of the woods!" Harry spat and Ginny jumped up overly eager to help Harry, and she stroked the girl's face. I knew her to be Isabella, but she looked like a wounded bird.

"Put her in my room." I suggested and Harry glared at me. I could see why, she looked so broken I just wanted to help her, I knew he must be in such turmoil.

"Harry she can have my bed and I'll share with Hermione in the same room. We can protect her while you sleep." Ginny whispered she was still gazing at Isabella stroking her hair.

"Wasn't good enough...just a toy...never...loved me." The anguished sobs erupting from Isabella made all of us cringe and Mrs Weasly came down to see what had happened.

"Harry is that?" we didn't give her a chance to finish, we all nodded and Mrs Weasly seemed to jump her gaze motherly and supportive.

"Mrs Weasly, I suggested Isabella sleep in my room, then Ginny and me can sleep on the floor or mattresses and help her." I said softly trying to stop her from barging past us and taking Isabella by force and making her eat.

"She won't let go of me." Harry confessed softly and as if to prove a point Isabella tightened her grip on him, I watched my eyes wide, out of the corner of my eye I saw Ron who looked as if he wanted to kill someone, and I may have helped him.