A 14-year-old Texas girl died Sunday morning when her charging cell phone fell into a bathtub and she was electrocuted. “There was a burn mark on her hand, the hand that would have grabbed the phone,” grandmother Donna O’Guinn told KCDB. <br /> “And that was just very obvious that that’s what had happened.”<br /> Madison Coe recently graduated from Terra Vista Middle School in Lubbock, Texas.