Hi So leigheas,
I'd say that the reason your mom and dad behaved that way towards you indicated a (BIG!!!) fault with them,
not with you 
And although it's completely understandable that your instinct might be to look inside yourself for the reason, the blame/fault is
entirely theirs. Abuse is
never warranted
You deserved better than
them, but it
wasn't your fault

And it sounds like you've had so much to cope with following on from that, with maybe little help to work through those things.............I'd say that you're doing exactly the right thing in looking for a new therapist now though, with the right support maybe some of the pain can ease for you. You
didn't ask for/deserve
any of the things that have happened to you and you
do deserve help in working through them and the effects of those things.
Alison