From Kathy Merrick Pleskin:

Diana passed away in 2015 in Malad City, Idaho, from complications due to cancer.  Her last name was Loman.  Her husband preceeded her in death.

Kathy stated that Dee Dee was a great girl.  They went their separate ways around age 20 but she remembers the fun time they had.  Diana was a fellow "wild seed".