Sounds like a one sided friendship to me. She is a fruitcake, not to mention selfcentered. Don't play into her pitty party game. Just let it go. She is in the wrong. It is drama, the exact reason I don't have a FB page (not trying to criticize any one who does).
I had a friend whom I've known since I was born. She and I lost contact for several years. We started to talk here and there again (maybe 4 times per year) and eventually I realized I was the only one making calls. It seemed everytime I did call she was always busy or had to run and would cut the call short so, I stopped calling her. One day I saw her DH at a store and he said, "Give .... a call". So, I called her a few days later only to be the cushion to her pin. She starts off by saying, "Long time no hear" and she proceeded to tell me that 5 or 6 months prior a good friend of hers (no one I knew) had passed. The entire time she had an attitude. I realized that I didn't care for her friendship from that moment on. Everytime I see her I am nice and friendly but, I never call and don't initiate getting together, nothing. She on the other hand ALWAYS says, "I'll give you a call in a few weeks". I'm not sure why but, she does it every time. I just smile and say, "Take care".
Don't let people get under your skin or bring the worst out in you. Give your energy to people who value you and enjoy your time.
Take care.