Disclaimer: I do not own Harry Potter, its characters or anything else you recognize from the books/movies. I do however own my OC and anything you don't recognize unless otherwise stated.

Summary: It started when they were six; Fiona gave Harry her lunch when she saw he didn't have one. From there their friendship only grew, no matter the obstacles trying to keep them apart. She was the little sister and best friend he'd never had. When she gets her letter from Hogwarts she can only hope that all the owls around his house means Harry got one too. (Draco/OC fic)

A/N: Re-writing / updating this story so keep in mind if you're a new reader.

Updated as of 1/29/19

Fiona didn't like the next door neighbors they moved in next door to; they were evil. They weren't really evil but, in the eyes of a child, they couldn't be anything but.

To put it simply, they were mean, rude and just most intolerable people you could have the displeasure of knowing. The husband worked as a salesmen at a drill-making company while the wife stayed home with their son, who was as bad if not worse than his parents.

Fiona's mother often came home and complained about the wife making some crude remarks at the store and her father often complained about the husband as well from their brief interactions; Fiona's parents were never ones to be judgmental about anyone and they made sure to raise Fiona to not form opinions on people before she got to know them, but it was hard not to with that family.

The couple's son, Dudley, went to the same school as Fiona, though he was a year above her. He would often pick on her for no reason, pulling her pigtails or tripping her on the playground then laughing with his friends while she cried.

The only one that was nothing like them was their nephew that they had adopted as a baby. It was obvious the couple didn't even like him; he was skin and bones while their son was rather chubby. Their son always had the best clothes while the nephew always wore his cousin's hand-me-down clothes that were too big for him; he had to use the last hole on an equally too-big-for-him belt and roll up the sleeves on most of his shirts. His shoes were scuffed up and had a few holes in them; he had to wear two pairs of socks, probably also full of holes, so they didn't fall off his feet. His glasses were held together in the middle with tape from one of the many times his cousin had punched him in the nose. While Dudley's hair was always combed and neat – at least when he arrived at school – his cousin's stuck up in every direction.

Fiona met Harry on her first day of school when she was assigned the seat next to his. He was hesitant to try and make friends with her knowing that once Dudley got to her she would probably avoid him like the other children did. Instead she made the choice for him when she offered him her lunch later that same day. She saw that he didn't have a lunch and didn't hesitate to give him half her sandwich. Well, he had a bagged lunch but no one could call bread crusts and apple peels a proper lunch. Fiona sat down next to him and pushed half her ham sandwich to him without a word. He seemed genuinely shocked by the gesture and had to ask her if she really wanted him to have it. She seemed confused but nodded with a smile and he gave her the biggest smile back. Every day since then Fiona would ask her mom for two sandwiches and would share the rest of her other snacks with him until finally her mother just started packing Fiona two lunches.

Harry was always nice to Fiona and was always the one to bring Fiona to the nurse whenever she skinned her knee as a result of being tripped or pushed down by his cousin or his four friends that were equally as mean. Them being skinnier and faster than Dudley and his gang, they were able to climb up to the top of the monkey bars out of their reach and Harry knew the best hiding spaces.

…

Life with his aunt and uncle and their insufferable son was never easy. Sometimes Harry went without breakfast, lunch and supper as punishment for the smallest of mistakes. He endured constant belittlement from his aunt and uncle equally. His cousin gave him daily Indian-burns and noogies as well as just simple pushes to the floor or into the walls. He always gave him bruises and used Harry as his own personal punching bag whenever he felt like it, which was quite often. Harry was always on his best behavior, hoping for the smallest word of praise or even just a smile. They never came.

The other children at school ignored him because Dudley and his friends would bully anyone who tried to talk to him. He always sat alone during lunch and would sit on a stump outside during recess with a book if Dudley didn't take it from him and throw it in the mud first.

It wasn't until he met Fiona that he felt like he finally had a friend and life wasn't that bad. She and her parents moved in next door during his second year of primary school (around age six) and Dudley hadn't gotten the chance to threaten her. He already picked on her before class for no reason other than she was the new kid – neither of them knew she was their new neighbor as her mother had driven her to school late. Once Dudley found out she was giving Harry lunches he picked on her even more and said his usual spiel about not talking to his cousin. Harry was sure Fiona would stop bringing him lunches and he'd lose his first and only friend just so Dudley would leave her alone but she surprised both boys when she stood up to him.

Through her tears, as she lay on the ground where Dudley had pushed her, she gave him a sharp kick to the shin causing him to fall to the ground in pain. Harry stared in awe as she stood over the large boy and vowed to be Harry's best friend no matter what Dudley did to her. Then she stuck out her tongue at him as she made a silly face before she took Harry's hand and brought him away.

When Harry realized that she was also his new neighbor he felt like things were starting to change for the better. He had a new friend and he could see her whenever he wanted. They often played on the playground a few miles from their houses, Fiona's mother would drive them; Harry was used to walking as his aunt and uncle didn't really care where he went as long as he wasn't bothering them when he didn't have chores to do.

…

During summer vacations the two would see each other every day, after Harry had completed all his chores and more. When his aunt and uncle would send him outside in the blistering sun Fiona would just invite him inside her house so they could play there and he could enjoy her mother's baking.

The two were grateful that the Dursley's never wanted to bring Harry with them when they went out – whether it was just out for dinner or on vacation for a week or two – and had one of their other neighbors, Mrs. Figg, watch him. Fiona's parents offered to watch him instead but the two knew he'd have too much fun. Mrs. Figg would always let Fiona come over so the three could play board games or play outside anyways. Though some days the two would be stuck on the couch as Mrs Figg showed them what seemed like endless pictures of her cats. They also had an understanding that Harry was never to mention any of the fun they had or that he saw Fiona there otherwise the Dursley's wouldn't let Mrs. Figg watch him anymore. He was to act as if he despised going to her house.

The two only grew closer over the years. Harry would stick up for Fiona whenever Dudley and his friends would bully her and Fiona would always bring Harry food and other things he needed. Fiona wasn't opposed to giving Dudley a good kick before the two would run away from the bullies. She'd even convince her parents to buy Harry a few knight figurines for toys that she gave to him for his eighth birthday. He was only a month older than her and always felt bad not being able to get her anything for her birthdays but she said that she didn't mind as long as they stayed friends forever.

It was five weeks before his tenth birthday, on Dudley's birthday, when Harry was chased up a tree by his Aunt Marge's dog Ripper after accidently stepping on his paw. Aunt Marge didn't call off the dog and Harry was left stuck up in the tree well after the party went inside. It was around seven pm when Harry heard a window open behind him. He turned to see Fiona in her room. There was a tree beside the one he was in that reached her window. He carefully made his way to the other tree, Ripper barking wildly all the while, before moving to her window. She helped him inside before they shut the window, deafening the sound of the noisy dog. The two giggled before sneaking downstairs to get Harry something to eat.

…

The summer of their eleventh birthday, Fiona was outside with her jump rope when the Dursley's came out to their car. She saw Harry come out and waved to him. He was supposed to be watched by Mrs Figg while the Dursley's went to the zoo for Dudley's birthday but she'd broken her leg and was in the hospital. Harry smiled and waved back to Fiona but then his uncle pulled him to the side and out of her sight. As they pulled out of the driveway Harry gave her another wave and a small smile.

Fiona was looking out her bedroom window when they got home later that night. She saw Harry's aunt leading a soaking wet Dudley to the house and Harry's uncle pulling him by his hair after them. She wanted to go in and save him from that horrible family but she was only a kid.

…

When Fiona got her letter a week later she was overjoyed. Her father was a wizard and her mother was, what she learned to be, a muggle making her a half-blood. She had learned she was a witch when she was about seven and her parents made her swore never to tell anyone she didn't know was also a witch or wizard, and that unfortunately included Harry. There were many times she wanted to help Harry but she didn't know how to do any magic and her parents told her she wasn't allowed to anyways. There were a few times if she concentrated hard enough she could make Dudley trip over nothing or make his pants rip.

Fiona was so excited to learn she would be going to a magic school until she realized that meant she wouldn't see Harry at school ever again. She secretly hoped that maybe Harry would also get a letter but she couldn't just go and ask him. Magic was supposed to be a secret kept from muggles and it's not like she'd be able to get past his aunt and uncle to ask him anyways.

Then she started to notice the owls that started to cover the house. Each day a new owl showed up until the Dursley's roof, car and lawn as well as the nearby telephone poles were covered in owls. Her father told her that owls were a wizard's way of sending letters. That was how she'd gotten her letter and how other first years get theirs. Fiona knew then she wouldn't be leaving Harry but she also knew his aunt and uncle would probably never allow him to go, hence why there were so many owls covering their property. She knew eventually Harry would get his letter and she'd be able to show him hers.

Then came the day they suddenly packed up and left on an impromptu vacation. She watched as they packed up their car before they all got in. Harry looked out the window and saw Fiona in hers. He gave her a sad smile as she waved to him. She saw Dudley hit Harry over the head before she watched the car drive away.

A/N: If you want an actress to imagine Fiona as (how I see her in my head) I imagine a younger version of Katie McGrath (Morgana from Merlin)