he s charged with killing his sister. i really don t know why. that s my question, i don t know why. shocked and stunned, the mother of a 5-year-old girl killed by her 13-year-old half brother. the boy, a fan of professional wrestling. that world of body slams, thrown elbows and choke holds. the mother left the teen to babys babysit. the teen said he used to child to practice the wrestling moves. he slammed on the bed. slammed over his knee. elbowed and things of that nature and pounded upon, suffered significant internal injuries and obvious ll lly sumd to the injuried. reporter: he appeared to take pride in what he was doing and showed no remorse.