My mother is nasty, bitter, hateful, argumentive, unsupportive and the meanest person I know. She's always been this way, but it's getting worse as she gets older (now 68). You cannot talk to her nicely or try to explain your point without her snapping at the person and starting an argument. If you say to her "why are you arguing" she says, You are, not me. It's always the other person, never her. You are dammed if you talk to her, and dammed if you don't talk to her.