No clue but your question brought up another issue.

I just don't get being so concerned about your estate after you are gone. It will be nice if I have money left to leave animal charities but if I need to use my money for my own care then so be it. The humans in my life have been raised to be self-sufficient so they aren't getting anything from me unless someone happens to have a disabled child etc.

I always tell my parents that I hope they spend every last penny they have on fun stuff before they die. I don't or need an inheritance .