A Joplin teen was killed by gunfire Friday afternoon while she and her husband were horsing around in their home, according to Newton County Sheriff’s deputies. 19-year-old Jona Rosson was shot in the stomach at her home in the 4300 block of Connecticut Avenue. Investigators say a gun, that was holstered on her 21-year-old husband’s belt, accidentally went off, hitting Jona. She was pronounced dead at a local hospital. Officials have classified the shooting as accidental, but say the incident is still under investigation.