I'm sorry you are going through this, RxQueen.

I always wondered about family members of people with MI who were so staunchly unsupportive; my theory is that they too have felt some of the darkness we've felt, but they've always been considered the "normal" ones and are so incredibly afraid to show any crack in that armor, because it's all they have. My aunt is the same way. She has my bipolar uncle and borderline/bipolar mother (her brother and sister), and me. And she is always talking about how she is the normal one. She used to be like my mother, but she never visited when I was inpatient, never let me talk about any MI issues, was always just trying to sweep everything under the rug. As I got older, I could see little cracks in the armor where I suspect she has had her own struggles. I don't know, this may all be babble, I just wonder if your sister acts from a basis of fear.

Anyway, I agree with Divine--it is necessary to limit interaction with toxic relatives. I had to do it with my aunt, half-sisters, father, mother, and uncle all at varying times. Amazing how I don't struggle to get out of bed from the depression anymore...