Why do you hate your family so much you really didn't go into detail.in fact it sounds like this all happened in one day and you just woke up and hated them.my family is dysfunctional to i wish I could get at 24.i need to but my mother is like the blackmailer of the year.and she makes me feel so guilty about decisions I make to try to be independent.she says I can stay with her forever.those words echo in my brain like I'll never have freedom I'll always be taken care of by someone else. The only way I'd leave at this point is if I had her approval and I know that won't happen cause I'd be the last child to leave and she'd be alone.but you if you really want to leave I'm pretty sure you could and it sounds like she don't like the cat so you might get away with taking it to.if not let her take it to the pound and tell them you'll take it.do you have a job.if not I'd suggest finding one.maybe take a class so you can get a job doing something your good at unless you are already good at something.you are not out of options you are not out of options your out of patience there is difference and patience can be learned over.you need to remember what you learned in therapy and breathe a little but more when you get angry like this cause anger can do to things neither good it can make you deadly ill or it can make you want to kill. And there's consequences for both.