One thing that needs to happen is when you are an adult you have to support yourself. Whether that means working or getting government assistance, one or the other needs to happen. Borderline personality disorder does not render a person incapable of work. Adults also do not behave in the way all of you are, with doors and towels and bickering. And as far as a "last straw," your mother is the only person entitled to have one, as it's her house.

Start taking steps to become independent and you can keep all the doors closed and block all of them with towels as much as you want. Right now, you don't get to.