For all my glibness, I am sorry that it turned out the way it did. You've been a good friend to her for many years and the loss will hurt no matter what face you put on it. This party was just a kind, SueSue way of saying good-bye to that friendship, I think, with a hopeful edge of "maybe I'm wrong and everything will be okay" tossed in. I hope one day she finds the help she needs and is in a place where you can be friends, or at least friendly acquaintances, again.