I work with Jeff (Andy's husband) and have been friends with Andy and Jeff for years. When I heard the news, I was devastated.
Several articles mention her service. If you are inclined to do something in memorium, here's the request:
"Andy wouldn't want you to send flowers; instead, you can send a donation (just say that it is "in memory of Andy Basque") to the Pacific Crest Trail Association, c/o of Shari Hansen, 5325 Elkhorn Blvd., #256 , Sacramento , CA 95842 . And, if you want to do more, go out and plant a tree in Andy's name, and send a picture of it to me."
-r