A nurse was shot dead during a robbery in her hospital parking lot by a patient having a “mental health crisis,” officials said. Ada Doss, a 27-year-old married mother of two, was walking to her car during a shift change at DCH Regional Medical Center in Tuscaloosa, Alabama, on Tuesday when she was approached by Mathew James Taylor, 41, who’d been dropped off by a friend who knew he needed help, Al.com reported . Taylor approached the nurse with a gun, demanded her purse — and then fatally shot her, officials said. He then callously went through the dead mom’s belongings before cops found him just feet from her body, Tuscaloosa Violent Crimes Unit Capt. Jack Kennedy told reporters at a press conference. Ada Doss with her husband and daughter. Ada was shot and killed. Facebook / Ada Doss Ada Doss, 27, was shot dead in a hospital parking lot Tuesday. Facebook / Ada Doss Taylor was quickly taken into custody. He had no connection to Doss, who was declared dead at the scene.…