Some men are such bum holes 
Chloe's and Kyle's biological dad turns up when he feels like it. Which is not often but too often for my liking 
We have been split for 2 years in october, The only time he shows up are birthdays and christmas and this time on Kyle's birthday he couldn't even be bothered and sent his new girlfriend to bring present. Didn't even ring 
She knew how he was with my two and she went and had a baby with him, silly woman
His new years resolution was to take them every friday and bring them back saturday and to have them one night a week for tea. He managed one friday never turned up again 
He does not pay csa each time they catch up with him he quits his job, and he told his mum that he as paid me £100 a week since we split up ... I wish. I soon put her straight 
I do the same with them I take them to see his dad and new wife and his mum and boyfriend I'm not going to spite them just because he can't be bothered to see them or take them himself.
My advice to you is to always be there for her try not to bad mouth him although you want to. Which I do most of the time when the kids are out of the room 
Even though she as not known her dad the only things she will know is what you tell her.
If he ever turns up let him see her, then if he doesn't turn up after she as always got you.
If he says he is coming to pick her up make sure she is dressed and ready to go out but don't say where she is going otherwise she may get her hopes up for no reason and it won't be his fault, she will blame you, as my two always fall out with me if he don't turn up. Charming
If you ever need to talk pm me
Good luck and hope everything turns out for the best 
