She had done nothing but cry when her big brothers had had to go to war. Desperately trying to cling to her oldest brother; her little arms wrapped as tightly as she could, around Arthur's neck. Arthur able to do nothing but apologies as he had pulled away. Kissing the tiny girl on the forehead and promising that he and the others would come back. The child sobbing uncontrollably in her aunt polly's arms, as the three oldest Shelby's had got on the train.

(Y/n) was Finn's twin, and from the moment that anyone could remember, she had adored Arthur. It was true that she loved the others. That she loved Tommy and John, Ada and her twin; but the oldest Shelby had always been her favourite. The little girl his constant shadow from the moment that she could walk. His name, the first word to leave her lips. The others joking that the little female Shelby was becoming more and more like him every day; but Arthur didn't care. He adored his sister, as much as she did him. The oldest boy always there to protect her, against the anger of their father. The one that helped her take her first step and the one that chased away the monsters from under her bed. So, everyone had expected her to act as she had, when she and Arthur had been forced apart. But it had been Polly and Ada that had seen the full devastation that the separation had caused (Y/n). The young girl barely eating, rarely sleeping, until the point that she had ended up in hospital. It taking a letter, a desperate letter from Polly to Arthur, that had elicited a just as desperate reply, to get the little girl to do what she should; to get her to come to her sense. Polly reading it and telling (Y/n) that Arthur wanted her to be strong. That she had to be strong for him. And that when he returned, he wanted her to be waiting for him.

And so, she had been. The ten year old the first to welcome her brother's home, as they got off the train. Arthur and the other boys amazed that she had grown to be so big and strong since they had left. Polly telling them that (Y/n) had become the terror of all the boys in the neighbourhood. That she fought just like Arthur did. Yet with Arthur and the others back, it was obvious that their little sister still had the love for her oldest sibling. The youngster always there when he woke from his nightmares. When his anger got the better of him. When the cocaine had taken its effect. (Y/n) threatening her twin more than once, for introducing their brother to the vile white powder when they were just thirteen. John and Tommy having to hold her back, when they had got in a fight. Their older brother's well aware that Finn wouldn't stand a chance against his sister's ire.

And now, here she was, a full member of the Peaky Blinders, much to her twin's annoyance. Her ever watchful eye on anyone that came close to her dear Arthur and the others. The only thing that distracted her, a certain boy by the name of Isaiah.

She, Finn and Isaiah, had grown up together. (Y/n) happy to befriend the little boy, when she learnt that his father Jeremiah, fought alongside her brother Tommy. Isaiah, the only boy that didn't have to fear for his life when the little girl was around. The only one that could tease her, without being scared that she might just bust his nose. But now, that little friendship had become more........well, at least it seemed to for Isaiah. Everyone able to see how he would look at the beautiful (Y/n) when he didn't think that her big brothers, that Arthur was watching.

"Ya doing it again..............." Michael chuckled, as he, Finn and Isaiah watched (Y/n) spar with Arthur in the little ring that they had created.

"Doin what...............?"

"Ya watching (Y/n)..............."

"What da ya see in her.........? She's ugly..............." Finn remarked with a huff. The young man always annoyed that his sister was accepted into the family business before he had been. That Tommy and John had encouraged her to be a part of the firm, instead of shielding her like they had done to him. Both Isaiah and Michael rolling their eyes at the comment.

"She's ya twin............wouldn't that mean you were ugly too..........." Isaiah remarked. Just shaking his head, before turning his attention back to the two boxing Shelbys.

Ever since they were young, Isaiah had enjoyed (Y/n)'s company. Even when girls were horrible, (Y/n) Shelby had been the exception. Isaiah listening as she would talk about Arthur, Tommy and John with such pride. About how they were brave and that his father must be too. She the one assuring him that they would all return. And that enjoyment of her company, had come to be more over the years. Isaiah coming to appreciate that there was more to (Y/n) as they had grown; and now it had almost got to a point where he could think of no other girl but her.

"Ya should say somethin to her." Michael continued, as he winced a little as Arthur grazed his sister's chin with a right hook.

"What..........and have Arthur kill me............? Ya know how close they are. Ya know that no one will ever be good enough for (Y/n) in Arthur's eyes. That he threatens any lad that might come sniffing around............"

"Yeah, but you're like family. Arthur knows ya. And as she is my cousin, I would say that she could do a lot worse........." Michael continued, before slowly getting to his feet and placing his hand on Isaiah's shoulder.

"Go get her, lover boy..............." Polly's only child smiled, before he left the area. Finn going to say something, only to see that Isaiah's eyes were once again firmly set on his twin. Finn just shaking his head, before following after Michael.