The Rock Hill Police Department is investigating why an officer used an electric stun gun on a 75-year-old woman who refused to leave a nursing home where she had gone to visit an ailing friend. The woman, Margaret Kimbrell, said she suffered bruises on her leg and face after she was knocked to the floor by the force of the weapon, called a Taser. Police Chief John Gregory said Tuesday the department is reviewing whether Officer Hattie Macon's use of the Taser was appropriate -- a step that is taken in unusual or high-profile cases. "On face value, it...