Sorry for your loss. Glad you got some alternative ADR's. She had the chance to marry a WDW-lover and blew it? Totally her loss!
I'd say, if any place is great for taking your mind off things, it's probably WDW.
Just let the kid in you come out. One of my personal favorites is getting a FP for Space Mtn. late at night. Make sure there is nobody right in front of you, and RUN up the queue inside the mountain!
Go until you are exausted each night!
Do you own favorite thing at WDW.
I'm guessing that WDW let you change the name on the room reservation. Sometimes they can get a bit sticky about that.