dad & daughter relationship, what do i do!

[missxisla]

long one,
i have 3 children, 2 with my ex now 8YOb and 10YOg, we sepearted about 4 years ago.
long story short hes a horrible man and never put his kids first, always the relationships with others. only wants to see them when convenient for him and really unworkable. when we was together he idolised our daughter and didnt care about our son at all, my daughter and him had an amazing relationship. when we split both children spent time with him and our daughter would always come home and say that dad was mean to me, locked her in the garden locked her in the bathroom, told them mum didnt love them or want to speak to them because i was with a new boyfriend, told the children lots and lots of harmful things and told me that he had forced our daughter at the time to have a shower with him. when he would collect them our daughter would absoloutely scream and we had to physically force her to go and he was of no help at all. she has been insistent for the last 3 years of not seeing him and we havent been succesful in getting her to go, mainly because dad doesnt help at all. weve been through courts and theyve said shes not to be forced to go and that she can see him if she wishes, shes chosen never to see him again. my worry is when she was 8 she had vaginal bleeding and i suspected she had started her period early. went to the drs and they said she was on the cusp of it being normal and not becuase she was so young, had multiple appts at the hospital which confirmed it was not her period. my worry is and i dont want to belive it which is why ive never bought it up that something has happened to her. she has additional needs and i absoloutely cannot put her through getting examined but i cant shake this feeling. the hate and turmoil she holds about her father is extreme and even when her brother talks about his dad she crys and tells him she doesnt want to hear his name. what do i do.
also its worth nothing that this man has dragged me through the courts for 4 years now and he doesnt actually care about the kids at all its just for show. also he hid he had a new son for over a year. hes just very bizzare

no she wouldnt allow them to examine her. maybe they didnt think anything of it as i was a single women maybe they didnt percieve the threat. i have asked her and explained she can talk to me about anything and she states that she trusts me with her life and she would tell me if something had happened but catergorically says nothing happened and cries saying why i dont i trust her. i did explain that i trust her and shes done nothing wrong.

i knew it was child abuse and told social services but no one would listen to me they kept telling me she had to go, if she didnt i was the one breaking the court order. he has made out that im stopping him from seeing his children unjustly, im a bad mum. hes told the world and his wife what an awful parent i am and how im doing this to be spiteful. social services have never tried to talk to my daughter, except one. her conclusion was its not safe for unsupervised contact, she then left on mat leave and have had so many poor social workers. i have really been through hell of having to except that this man can treat my children any old way and its acceptable. it feels like you have to close your eyes and hope for the best. but the social cant go from what the court orders. and untill now theres never been anyone willing to listen to my children. we now have cafcass doing ivestigations and the children are being spoken to and worked with, so im hopeful that the truth will out

do i mention this to caffass? with the fear of the OP saying that im being spiteful or malicious