I wasn't sure where to put this tbh but I think I need to appeal to cat lovers first and foremost.
My daughter is 6 and is high functioning autistic. She had grown up mainly ignoring my cat but occasionally being quite sweet with him. When she was around three or four she started to get jealous if he was on my lap and she would plonk herself in it. That I could live with and I just saved the cat cuddles for when she wasn't around, but since around the time of lockdown she has been increasingly hostile towards him. He is a very loving and sociable cat but she constantly shouts at him, shooes him off with cushions and tries to shut him out of the living room where she tends to base herself. This results in me telling her off and opening the door so he can come back in but then she wails and whines and the cycle continues over and over. Her main issue is with him licking which for some bizarre reason she finds utterly unbearable even though it never used to bother her. I have noticed he is licking more than ever which I'm certain is a stress reaction as he has been checked out by the vet. So you see it's set up a vicious cycle.
During lockdown I managed to curb my daughters behaviour temporarily by introducing a sticker chart which worked really well for a few weeks but then for some reason it stopped working and she is back to her hostile behaviour again. She now even wakes him up when he is sleeping and takes issue to the fact that he has a water fountain and she wants one and he has a scratching post and she doesn't have one, when I remind her that she's not a cat she says "yes I am!" This is the level of logic I'm dealing with. It's causing constant battles every single day and it's wearing me out. I have tried talking to her about this when she is calm but all she tells me is that she just doesn't like him.
It makes no sense. He is the most loving and affectionate cat you are ever likely to meet and he has never once hurt her. She adores my sister's cat and always wants to stroke cats she sees in the street so it not about cats in general.
There have been times I've been so worn down by it all I have considered trying to re-home my cat, but the thought of it makes me tear up, I just couldn't bare it, I love him too much!
Hoping someone can offer me some sensible advice as I'm all out of ideas.