http://www.kiiitv.com/news/txstatenews/48799027.html KIIITV News Story Created: Jun 22, 2009 at 3:39 PM CDT Story Updated: Jun 22, 2009 at 3:39 PM CDT GALVESTON, Texas (AP) - A 16-year-old Galveston girl has been charged with aggravated assault with a deadly weapon in the accidental shooting death of her 12-year-old sister. Lt. D.J. Alvarez of the Galveston Police Department said Monday that their mother also may face charges for making a firearm accessible to a child. Alvarez said the mother was in the home when the incident occurred. The teenager was playing with a gun when it accidentally went off Sunday morning, striking her sister in her upper torso. The younger girl then died at a hospital. The 16-year-old is being held at the Galveston County Juvenile Detention Center.