It's complicated. She allows my brother and his son to visit and help (not his daughter), allows her one daughter to help with everything (but not her other daughter) and refuses to let me help or visit. She moved in with my father and runs everything. When mom was alive, mom stopped her behavior but since we lost mom .... dad and I used to have a close relationship, in fact it was my family that was always helping him and mom. He now sides with everything my sister says and does. Dad keeps saying I have to make your sister happy so.... he just seems so unhappy.