Dona Marie Perry, 68, was last seen January 5, 2016, at a Starbucks in Ojai, California. She left home about 9 a.m. that morning to attend a doctor’s appointment in Thousand Oaks but canceled the appointment and never returned or made contact afterward. Perry had been diagnosed with early-stage Alzheimer’s, which had not yet severely affected her cognition but may have been a factor in her disappearance.

Two days later her car was found abandoned near the Gridley Trailhead, which leads into the Los Padres National Forest—an area in the opposite direction of her planned appointment. A search of the surrounding area, including a follow-up search in March 2017, did not turn up any clues. At the time she vanished Perry was described as 5 feet 6 inches, 130 pounds, with gray hair and green eyes; she was wearing a teal and blue jacket, a flannel shirt, a wide-brimmed brown hat, and carrying a pull-string backpack.

No confirmed explanation for her disappearance has been reported. Does anyone have information about Dona, recall seeing her that day, or know anything about activity near Gridley Trailhead on January 7, 2016?