I have a friend like that. When she says something that is on my taboo topics list (insulting and ridiculing others, the past (not reminiscing), my family, sex, her constant body and feelings report, etc) I tell her that I don't discuss those things and not to bring them up to me. Period. Then she does it every time, and then when I ask her not to she pulls something up from the past that is insulting, traumatizing, as if she's been just waiting for the chance to trigger me to want to sock her in the face, repeatedly.

I told her F off and blocked her number.

No one deserves that.

Not a friend. A piece of human garbage to purposely hurt someone else or invade their life. A piece of garbage, not even a human.

I'm sorry you're going through that. We all experience those people in our lives who suck.