Child psychologist for court

I've been told a few times that my daughters dad Is going to take me to court. Unsure if he will but my daughter is having serious issues with contact and we are off to see a psychologist.
I've since been told that whatever happens at that psychologist won't hold any weight in family court. I'm not doing it out of spite I'm seriously worried about my child's mental health. If I had no concerns at all I wouldn't be bothered. What I'm concerned about is the stuff that comes out in the sessions. If this has no weight in family court than where do I go to for it to be able to be used in court? Is there a list somewhere that I can find someone that can be used in court if he takes me to court?
I've seen councillors with her but it's at a point I need some more help with these issues as the councillors have advised to watch and give ways I can try to help but things are getting worse not better.
I am not in anyway trying to be nasty. Even before he said court again recently I already at the psychologist appointment booked. And no I do not talk bad about him. The opposite actually. I buy birthday presents for her to give, Xmas, Father's Day etc. I'm following her queues and what she wants/asks for or asks not to do. I've gone out of my way to try and be nice but he's continually doing things himself at contact in person and on the phone to damage the relationship himself.