I've posted a remembrance of Karen on This is Reno. It's over 1200 words, but that's as short as I could get it.
Remembrance: Karen Hansen 1947 - 2012
Also, at one time Karen asked me if I would want her paintings after she died. I don't know what she expected I would do with them, or even if they are salvageable since most of them have been gathering dust for years. I'm thinking of possibly creating a web page for them.
I've been using flickr for my own stuff, but there's probably better host sites now. It should also have a place where people who knew her can post their own memories. Anyway, I'll be looking into it. Any ideas would be appreciated.