Agree with @Zoffiel . Just because you share some DNA doesn't mean you have to put up with crap. Toxic is toxic, whatever the wrapping. The old adage of you can choose your friends but not your family may be true, but you certainly can choose whether or not you burn up emotional calories on them. For my own mental health, I chose to sever all contact with my highly venomous mother and stepfather. I last spoke to her at my brother's funeral in 1995 and my words were to basically get sexually active and travel. That is Fuck Off!!! Best decision ever.