UPDATE: Missing woman last seen in Horizon has been found, the El Paso County Sheriff's Office told KTSM. EL PASO, Texas (KTSM) — The El Paso County Sheriff's Office (EPCSO) is asking for your help in finding a missing woman who was last seen in Horizon. According to EPCSO, Yuncha H. Thompson is estimated to be 75 years old and left a caretaker's residence at 420 S. Halstead Dr. on foot. It is unclear when she left the home. EPCSO said Thompson is suffering from dementia and was last seen wearing a plaid black, gray and white shirt, black leggings and pink slippers. Thompson does not have a cell phone on her person, EPCSO said.