My guess is Edith left lots of little subtle clues around her house, letting hubby know where she was going.
Was she afraid her hubby might wear her drawers by mistake?
I haven't found an account of her death in the papers yet but her hubby died of the flu in '04 and it didn't mention his wife in his write up.
Dean itched to ask her how she was so sure it wasn't Mr. David Dean who dropped her hubby into space but she began to sob anew, making any further conversation impossible.
All the more reason for hubby to stick around.
How can I drag out a pile of maybes and cause her to spend the rest of her days wondering if hubby will jump out from behind some bush?
There was no reason for her to be in Colorado except thinking her hubby was still alive and here.