The worst is that she went to my son to complain to him about something I wanted done with my part of the estate. She didn't discuss any of her concerns with me. I thought she was ok with everything. At the same time, she had him in panic that I was having an urgent mental health crisis.

The only reason this idea popped into her head is that I wanted something she disagreed with. My sister always dumps her badness onto me. I can only minimize the interaction I have with her. And do 'grey rock' to avoid getting drawn into her dramas.