I think everyone has one. Mine is my Great Aunt Ruth. Her intentions are good, but she is so critical of everyone and everything they do, that everyone has stopped talking to her. I think I was the last, and I have tried hard to keep a relationship with her, but I to have given up. When we go to dinner, she is critical of everyone in the family.
The last time I went to dinner with her, she told me that "she has nobody" and when she dies "no one is going to her funeral" (Guilt trip)
She is also the family martyr. When her brother was in a nursing home she went to visit him every single day for at least 3 hours. She kept wanting everyone to "thank her" but no one did. I think if you want to do something, do it because you want to and not because your only doing it to be "thanked" He has since passed.
She is 83 or 84 and she is set in her ways. In many ways I feel bad for her, because *literally* no one talks to her. She did tell me one telling thing when I did go to dinner with her a few months ago and that was she finds "love" through fighting.
I probably should go to dinner and take the abuse, because she is lonely. But I am the only one willing to take it