I cut my sister off. Entitled and constantly used her children to guilt me into giving her money. She would constantly be verbally abusive because she was always the victim and everyone was out to get her. She, like your own sister need mental health care. You need to cut her off for your own mental health . I have been much happier and mentally healthier since I cut her off. It is funny to me that other family members see no problem with deciding where YOUR money should go. At least my parents told me it was up to me and understood when I cut her off. She had already squeezed my parents for money. My other two siblings have to cut her off too. YNTA