SS tells her that she may have some retirement befits from a company called "Dryden
How did SS know this? I realize asking for help from SS could be a wild goose chase but since they raised the issue there must be something in their files that shows this . . . such as old W-2's.
I don't know if you can get copies of old W-2's from the IRS or not, but that is also worth a shot. Qualified plan participation is one of the boxes on your W-2