Mother of 10-year-old girl who died by suicide turns grief into a warning for other parents over nighttime cell phone use

Roanoke, Virginia — As a 10-year-old, Autumn Bushman loved to perform. The fourth-grade cheerleader from Salem, Virginia, was a bundle of energy. "She really turned my living room into a dance floor," her mother, Summer Bushman, told CBS News. "She n... [2230 chars]