“I’m scared.” They were the last words that Billy, a retired mechanic for the city of Costa Mesa who was in the parking lot of the small hospital, ever expected his wife to say. Kim called Billy just as he had returned from their home with some of her clothes. She was a former nurse with a radiant smile and matronly toughness that could calm down angry drunks at the biker bars she and Billy loved to visit. A three-year bout with pancreatic cancer hadn’t diminished her spirit or resolve. Advertisement Billy and Kim Folsom bought a house in Joshua Tree, Calif., three years ago, around the time she received her cancer diagnosis, so they could fight it together in an area they loved.