A wealth of largely contradictory evidence, I'm afraid. I'm going to have to go with "crashed into the ocean and drowned" as the most likely outcome for her. May I suggest the chapter about her in Unsolved Mysteries of American History? It's well worth reading even if you disagree with its conclusions.
Originally Posted by Christopher Ferro
"Now everyone was giving her that kind of look UFOlogists get when they suddenly say, 'Hey, if you shade your eyes you can see it is just a flock of geese after all.'"
"You can't erase icing."
"I can't believe it doesn't work! I found it on the internet, man!"