Hi this is my first post however I have lurked on Mumsnet for while now. I just need some advice regarding my DM.
My DM raised my sister and I alone after leaving my father who was physically abusive when we were toddlers. She has had numerous boyfriends (at least 15) over the years and when we were growing up she had a different relationship every year. This obviously had a big impact on us as we would get attached and then they would leave. It also led to a situation where we were left with a man she didn’t know very well and we were subjected to CSA. He was eventually arrested and it went to trial. He was convicted and sent to prison. During the investigation/trial she gave me no emotional support whatsoever and never once asked how I felt. Instead she basically threw a tantrum and demanded that I not tell extended family as they would judge her and think she is a bad mum! When I told her I was going to tell my Aunt(her sister) she threatened to cut me out of the will. She has also been emotionally and physically abusive over the years. My DS recently gave birth and my DM managed to create drama and upset her. I confronted her and have not spoken to her for a few weeks now. I feel guilty as she is all alone, she has fallen out with everyone in the family and has upset her siblings to the point that they won’t speak to her anymore. She has no friends either as she falls out with people very easily. The thing is she has no insight into her behaviour and thinks everyone is horrible to her. She was diagnosed with cancer several years ago and it has now come back. She has been told it’s an aggressive form and she doesn’t have much time left. She has now informed me that if I continue to exclude her from my life she will not leave me anything in the will. However I feel a lot happier within myself since I haven’t seen her. AIBU for ignoring her?