This is a work of fanfiction, using the world of Harry Potter for entertainment purposes. Harry Potter is trademarked by J. K. Rowling. I wish a had a stash of Polyjuice Potion, though.

Chapter 1

"Lynn, she's here! Come quick!", shouted a female voice from downstairs. The young girl sighed and closed the book which she just picked up from her bookshelf.
"It's this time of the year again..", she muttered, even though she has been perfectly aware of what would happen in the next two weeks. Her beloved sister came home to stay with them. She always hated Christmas time more than summer, even though the summer break was much longer. But in winter she had no other choice than to stay home and listen to her. She would tell them excitedly of her adventures. In summer, in summer at least she could leave. Go out and spend the whole day not thinking about her. And what she does. And how she lives.
But Christmas was suffocating. A holiday for families.

She summoned all her strength, picked a deep green sweater from her closet and slowly made her way downstairs. She could hear excited voices, smell the snow outside and already imagine her little sister with a red nose, huffing clouds of white breath into the room.
"My sweet little girl! How I missed you!", her mother exclaimed and hugged her daughter, making them look like a cone of vanilla ice cream from afar.
"How was school? No, how was your ride back home? Are you hungry? Did you eat something on the train? Charles, did you ask her if she ate? Nevermind! Come on in, you must be freezing! Let me get you some slippers - Charles, the tea kettle!"
Her mother couldn't contain her excitement, bustled about, talking to her daughter and husband and getting nothing done in the end.
"Oh, what am I thinking!"
She stopped in the middle of her motion, looked in her pockets for something, unearthed a wooden stick, swung it towards the kitchen and the high pitched noise of a boiling tea kettle stopped, only to be replaced by the noise of tea cups being filled.
"Mum, just let me take off me shoes first", the blonde girl in the door laughed, pushed herself into the house, shook her head to get rid off the snow and finally spotted her sister.
"Hey Lynn", she smiled. Her smile seemed genuinely happy, but as her twin-sister Lynn knew for a fact that it was more insecurity and nervousness than happiness. Lynn made her best effort to smile back. It didn't seem to be very convincing since her sister averted her eyes for a split second.
"Hey. Long ride?"
"Yeah.. you can say so. You know how I don't like trains."
Lynn simply nodded, turned around and went back to her room. The mandatory "welcome back sister" conversation was over for now and she could sit in her room for a couple of minutes until it was time to sit a the big dining table as a family. Which was, aside from the actual Christmas dinner, probably the worst part of it.

"So, tell me everything! How are you grades? Is somebody annoying you? Did you meet a nice guy?"
"Mum!"
The older woman laughed loudly.
"I'm sorry, I'm sorry, I'm just so curious!"
The blonde girl looked angrily at her mother, took a sip of her tea and started talking.
"Weell.. there isn't really much I can tell you that I haven't already done so in my countless letters."
She took a cookie and nibbled on it while thinking on what to tell.
"Oh, I don't care. It's so boring to read letters, I'd much rather hear everything from yourself."
Her husband coughed and murmured something about telephones, only to be ignored by mother and daughter.
"I'm doing quite good, actually. We had a surprise test in Potions recently and I did pretty well! Maybe I should rethink the whole I suck at Potions perspective."
Her mother beamed and turned to her husband.
"Did you hear that? Maybe she doesn't take after me in the end!"
He shook his head.
"Well then she sure isn't taking after me. "
"Oh, you know what I mean! You are smart!"
The three of them laughed, all the while Lynn only sat there, staring at the ceiling and sipping tea.
"Um.. Lynn, how is school?"
The girl next to her turned around and looked into her sister's face.
"Fine."
"Lynn, why don't you tell her about the essay contest?", her mother asked and stood up to get more tea.
"What essay contest?" Lynn sighed, sat up and faced her sister.
"There was a national essay contest. I wrote something and won."
"Wow, that's amazing! What was the subject? What did you write?"
"The subject was 'If Magic was real - how would it change the world and your personal life?'"
Her sister sat there, stunned.
"Jeez, ease up Marlene, that was a joke. The task was to write about family. I wrote about you."
Marlene looked confused.
"You.. really?"
"You never learn. Of course not." Lynn smiled wryly, took another cookie and got up.
"Lynn, don't be mean towards your sister. Marlene, she wrote about the Vietnam war. It was a very good essay and she deserved the prize. We are very proud of you, Lynn."
"I know, Dad", she didn't look at her father as she left the room.

She fell to her bed with a sigh. Why was she so mean to her sister? Why couldn't she just be nice for a change? Was it really so difficult?
So yawned and stretched - and her fingers brushed over the spine of a book. Her favourite book. Snow White and the Seven Dwarves. A birthday gift from her father. On her 7th birthday. She couldn't read very well back then, so her father read her the story every night again and again until she could memorize it and pretend to read it.
This book opened a whole new world in her life. It showed her the realms of imagination. Dwarves, magic, beauty. Things she desired since she got a hold of this book. She begged her father to get her more books. More fairy tales. She read them all. Dreamed about the world of magic. Yearned for it. She always knew she was only an ordinary girl. She knew that it was only made up and that no one - no one in the whole world could have it. But she still wished, secretly.

That was - until her 11th summer. It was a fairly ordinary day. She was sitting in the garden, eating ice cream, with a book on her lap, staring at the sky and being happy. Until she spotted an owl. She jumped up, the book slid from her lap, the ice cream almost fell down, she cried for her mother. Both her mother and her twin-sister came running. Marlene was as excited as she was. Seeing an owl in the day time so close was pretty exciting for a little girl. Her mother was strangely quiet.
But she never believed that the owl would fly down to them, fly onto the backrest of the chair she was just sitting on, dropping a scroll on the ground. Both of the girls were confused, her mother ushered them in, telling them it wasn't safe near the owl. Because it had claws. They went into the kitchen - reluctantly - and watched her mother from the kitchen window. She picked up the scroll, unrolled it, read it and held her hand over her eyes. Lynn always thought she did it because she was crying. Which of course made no sense to her back then. How would a simple scroll make her a cry?
But soon she understood.

Her mother came to the kitchen, the owl long forgotten.
"Girls..", her voice waved. "I have to tell you something." She looked at her sister. But wouldn't look her into the eye. She knew that something was wrong. In the same moment her father came home from his office. He made his way into the kitchen - alarmed because it was strangely quiet.
"Mary, what's going on?", he asked, worried. She only looked up and looked him into his eyes. He took the scroll. He sat down at the kitchen table.
"Tell them." That was the only thing he said in the next minutes.
"Girls.. your mummy is a witch."
Lynn couldn't believe what she heard. Marlene was confused. She couldn't comprehend. But she understood immediately. Her mother could do magic. And the owl.. and the scroll.. and whatever it was, it was something wonderful. "Your mummy went to a special school for wizards when she was 11. And just now we got a letter from the school..."
Lynn beamed.
"...and it's for you, Marlene. You are a witch."
She thought her heart stopped. Marlene? What about Lynn? What about her? "Mu-"
"After I graduated I met your father. Your father isn't a wizard. I married him and gave up my life as a witch. I didn't think that any of you would have magical powers. I'm sorry Lynn, only Marlene is going."
Now it was her who couldn't comprehend.
How?
Why?
Why wasn't she the witch?

It was as if suddenly all the magic got sucked up from the world. Everything seemed grey and unimportant. She felt a pain she didn't knew existed. She found herself in an agony most adults never experienced. It was as if her worst fear came true, even though she didn't know about it before hand. Magic existed in the world. And she wasn't allowed in.
She spend weeks, months, lying in bed and crying. Nothing could lessen the pain. Only gradually her tears dried up and she accepted her faith. She forcefully tried to do as many "muggle" things as she could. She tried not to think about it. It got better with the years. She almost forgot about her sister in the middle of the school year, sitting in class, talking to friends, being a normal girl. But sometimes, sometimes she would remember. Magic wasn't for her. It would never be.

Her twin sister has been her best friend. After the fateful news they drifted apart. Talking about anything related to magic hurt her, her sister quickly learned. But now everything in her life was filled with magic. She loved her sister and didn't want to hurt her. But there was no way to do so while being with her.

Author's Note: Hello and welcome! This is my first fanfiction. This will be slightly AU and there may be some dark themes coming up, which is why I set the rating to M to be sure. There will be no sexual content, though.

Also, I know, Lynn isn't technically a squib, but it makes for a more interesting title.

Lynn x Sirius pairing.

Enjoy!