A San Antonio mother has been charged with capital murder in the death of her six-year old daughter. Police were called to the Frontera Crossing Apartments off Watson Road near Somerset Road on the Southwest Side. They found the body of the little girl inside one of the apartments and a woman, identified as the girl's mother, walking around the complex, naked. No names have been released yet. The Medical Examiner's office is working to determine the cause of death for the child.