Ugh. How horrific. Right when you were leaving a note for her wanting to get together. Sheesh. I am so sorry. Here is the issue I run into. If my mother was to shun me, I don't think I could allow the grandchildren to visit her. First for obvious indoctrination reasons. 2nd, I feel as though i am tacitly teaching them that sort of behavior is ok and excusable on some level......which it is not.
Yet.....I would hate for my little ones to grow up without access to their only grandparents. In the end, I feel like myself and my immediate family are a package deal. I need to teach my kids that loyalty to your blood matters.
Am i reading it right that she is doing this partially on behalf of your sisters? You guys have a bad relationship?