By Jamie Landers From The Dallas Morning News DALLAS—A woman was seriously injured when her 1-year-old child accidentally shot her and an infant in a Granbury parking lot Wednesday, police say. The shooting happened around 11:25 a.m. outside a Walmart along U.S. Highway 377. The children’s 23-year-old mother was standing outside the driver’s side door and their 26-year-old father was standing behind the truck when the 1-year-old child picked up a handgun concealed between the seat and the center console, according to Granbury police. The gun fired once and the bullet went through the 3-month-old child’s leg before going through the mother’s arm and into the side of her chest. The mother was flown to a hospital in Fort Worth and the baby was taken to a hospital in an ambulance, police said. While the baby’s injury was not life-threatening, police believe the mother’s injury was more serious. Her condition …