(((((((((((((For you and your daughter)))))))))))))))
You say she does not remember when she "goes bezerk"? How long has the molestation been going on?
I am asking these questions because I have MPD/DID used to be known as Multiple Personality Disorder. There are times that I don't remember when things happen and that is because someone else (an alter) is out doing the action. There is an amnesic barrier between that part and myself. If you don't understand and want me to explain further, I will. I'm not saying your daughter is MPD, just saying that it happens to me. I was dxed with MPD in 92 after a work event left me traumatized and alters started coming out at unoppurtune times.
I am sorry that this has happened to your daughter as well as your whole family because it does affect everyone.
I hope the friends father is being punished for the abuse he has done.