That's brutal divorcedwoman. Your sister's actions aren't excusable, but part of the issue may have come from her own experiences with having a parent with BP. My mom has BP and growing up wasn't a positive experience. The issue with being a child in the situation is we can't choose who we have in our lives. As an adult we do have options and perhaps what your sibling is doing now is trying to rewrite the past by dismissing your feelings and being hurtful. This may actually be directed at your parent, but she's using you as the punching bag. Just a thought.

We can't choose our family, but we can choose who we allow in our lives. We all need support, but it just may not come from our family (it doesn't for me either).