Summary: AU. Where Harry has an older sister. Acacia Lily Potter was Seven and at a sleep over when she heard the bad news. Her family were dead. She ends up living with her best friend when more disaster strikes. She goes to Hogwarts and ends up following her dream. She never believed she would see her little brother again. But fate shows no mercy in Cia's tormented life. (Everything is moved seven years ahead, apart from the Weasley family, their births have been moved around to suit the fanfic and the Dates for Lily and James births are the same dates. But their death date has moved from 1981 to 1986.

I hope my dates are correct

Chapter 1 – The Night of Trick and Treats

"You sure you will visit when I get back, Uncle Sirius?" A little girl of eight looked up the long, black haired Black. He smiled down at her. She had bright red hair, just like her mothers. But she had the trouble makers eyes of her father. Sirius knelt before his God daughter and nodded

"I'll even drag Uncle Moony down." He said

"Swear?" She asked

"I swear on my flying bike, that I, Sirius Black promise to you, Acacia Lily Potter, to force Moony from his home for a visit. After your friend's birthday party!" Sirius smiled, Acacia smiled and hugged him.

"Thank you!" Acacia beamed

"Anything for you, Scales. You'll behave now, won't you?" Sirius said

"If I do, will you buy me a chocolate frog when I get back?" Cia asked, Sirius laughed

"Of course, come on midget." Sirius took her hand and took her to the Longbottom's. Alice Longbottom opened the door, holding her son, Neville.

"Sirius! Acacia, you made it safe and sound. Alice is waiting for you upstairs Acacia." Alice smiled. Cia hugged her Godfather, before running upstairs to see her Friend. "How's Lily and James? I am sorry worried about them…" Alice asked Sirius, her smile gone and replaced with pure worry.

"They are fine. I have another Idea that may keep them safe even longer…Just hope it works." Sirius smiled sadly. "I better run, see you Alice, say hi to Frank for me."

"I will, safe travels Sirius." Alice smiled and closed the door as he left. She could hear the girls giggling upstairs. She sighed sadly, so child should have to live in fear of their lives.

"So, ready?" Alice asked, Cia sat on her left and their friend, Georgiana Malfoy sat on her right, they formed a Triangle. In the centre and bowl of bertie botts every flavour beans, behind Alice was a chalk board was a table ready to make a tally.

"Of course!" Georgiana smiled brightly, out of all three of them Georgiana and Alice were pure bloods, Cia was half blood, even though her father came from a very powerful pure blooded family. But her mother was muggle born-meaning she was born into a family with no magic. Making Cia half. "I'll go first." Georgiana reached into the bowl and pulled out a white bean and popped it into her mouth. She crewed thoughtfully. "Milk."

"Me next…" Alice picked a green one. She pulled a face. "L…Lime." She choked out

"Should that count as a loss?" Georgiana asked

"No! I love Lime!" Cia beamed and picked up a green bean. "Ewe…"

"What?" Georgiana and Alice asked together

"Chocolate." Cia fell on to her back laughing at their facial expressions.

"Don't do that Cia!" Alice told her

"What are you doing?" Frank Longbottom entered the room, looking tired.

"We are seeing who gets the most horrid Beans." Alice smiled, Frank picked one, the girls watched him with hopeful eyes.

"Dirt…" He mumbled, the girls burst out laughing. There was a sudden clap of thunder, causing everyone to jump. There were no clouds out, which left them all confused. Alice came up stairs holding a letter.

"Cia, this just came for you." Alice smiled

"Oho, what is it?" Georgiana asked excitedly, Cia opened it, with a lot of excitement. As she read it, her face fell, tears began to streak from her eyes.

"Acacia dear? What's wrong?" Alice asked

"He found them…Voldemort…" Everyone flinched. "He found my family!" Cia cried. No one knew how to comfort the grieving girl. Frank took the letter.

"Your brother is still alive…" Frank said

"And going to live with my aunt and uncle. They hate our kind!" Cia cried "My poor baby brother…"

"It says you can stay here with us." Alice read the letter too. "You are welcome here Cia."

"…Thank you…" Cia sniffed, Alice and Georgiana hugged Cia

"It's okay Cia, we're here for you." Georgiana said

"Thank you, girls." Cia nodded

Cia had to settle into life with the Longbottom's, then one sunny afternoon, Cia and Alice were playing with Neville, whilst Mrs. And Mr. Longbottom sat doing their own thing. The front door was blasted in.

"In here!" Frank hurried the three kids into a cupboard. Cia and Alice peeked out, Alice holding her little brother close.

"Death eaters!" Alice gasped as three people entered the living room.

"Crucio!" The only female crackled evilly. Frank Longbottom fell screaming. Alice had to cover her mouth, Alice and Cia could do nothing but watch and listen to the death eaters torture the Longbottom's. The death eaters escaped and the house fell quiet. They scrambled out of the cupboard and to the fallen Longbottom's.

"Mommy!" Alice cried "Daddy! Please, get up."

"Please!" Cia begged, her heart was shattering once again. Aurora's filled into the home with Alice's Grandmother. They found the three children crying over the Longbottom's.

"Come here children." Augusta Longbottom said, Alice carried Neville over, but Cia didn't move. She had lost the second family she had and now, she had never felt more alone. Alice's uncle Algie had to pick her up and carry her away, tears fell from her eyes.

That night, Alice and Cia lay in their beds, staring at the ceiling silently.

"I never thought I would understand how you felt." Alice said suddenly, Cia looked over at her "But, Now, I do. How did you cope Cia, you acted so strong…?"

"I had to be happy, I can't be sad for what has been. I could only move on. I still had my friends, and there are still people who care about me." Cia smiled "I have to stay strong for Harry and Neville too."

"I need to be strong for my little brother too. We can be strong together!" Alice smiled

"Yes, we will always be stronger together." Cia held out her arm across the gap between their beds. "Sister?"

"Sister." Alice smiled, grasping her friends hand, they smiled and ended up falling asleep. When Augusta and Uncle Algie went to check on them, they both smiled as the saw the girls had fallen asleep holding hands.