I've been living with my mother to take care of her and be there when she needs me. My father passed away 4 years ago. Know mom is dying and my sister was appointed POA. Know shes using this power to control the house that she doesn't live in, and been taking stuff. The will hasn't even been read, and she says I'm taking this because I got mom this and trying to control me and my brother. What rights do I have? The roommate that's been renting before this all happened.