HOUSTON (KTRK) -- A licensed gun holder took matters into her own hands when a man tried to rob her Friday evening at a gas station in northeast Harris County, deputies said.The Harris County Sheriff's Office says the shooting happened around 6pm at a gas station off FM 2100 and Saddle Creek Farms Drive.The woman was sitting inside her car when the suspect opened her car door and demanded her purse, deputies said. The woman reached into her purse, pulled out her gun and opened fire, shooting the suspect in the shoulder.The suspect ran down FM 2100, where he collapsed a short time later. Authorities say they called LifeFlight because suspect lost a lot of blood.The suspect faces aggravated robbery charges. The victim is OK.