I'll disagree with you because I thought the same of my parents until I started getting to know some online people who are parents... And I see their ups and downs on parenting on Facebook and I used to tell them some of my family dynamics...

...and your parents, the little I know of them, are worse than mine. Truly.

My mother didn't care that my sister could have been in an exploitive relationship that was sexually abusive.

Yours blamed you and enabled things.

I know we're hardwired to attach to our parents, to idealise them, make excuses for them, defend them. We are. I'm not saying I find it easy to criticise my parents too.

But your parents aren't good parents. Simply on account that they not only didn't believe you, they blamed you. They didn't protect you. I'm sure they're emotionally abused too, as well as emotionally neglected. You only feeling safe in the bathroom is a proof. Because I only feel safe in T's office too.