Wow, i've been in the same boat as you. You described the difficult person perfectly. I used to be friends with a woman (well, I actually shouldn't call her a friend, she was more like a cancerous tumor) who was just like this. She would only call me to rant about other people and problems in her life. Would waste an hour of my time on the phone with this garbage and never once ask me how I was. She would threaten to get other people fired because she "knew" people. Please! And every.single.time. that someone so much as looked at her or her child the wrong way she'd be confronting the person on it. Always confronting people. I finally pulled the rug out from under this B and she's never spoken to me since. I call it "tumor removal".