MEMPHIS, Tenn. — A woman identified as Leah Carnes was fatally shot Monday evening, February 16, in southeast Shelby County, authorities confirmed. The deadly encounter unfolded at the Centennial Gardens Apartments in the 7800 block of Capital Peak Lane East, where detectives responded to a homicide investigation just before 6:15 p.m. What began as what neighbors described as a calm evening quickly turned tragic…