Investigators in North Texas say a woman, her estranged husband and her sister have died in gunfire blamed on him. Corsicana police say three children escaped through a window Friday night. Dispatchers received a 911 call from a woman reporting that her sister and brother-in-law were arguing and he had a gun. Police say Nancy Castillo managed to get three children out of the home through a window. Police believe Rosalio Mendoza fatally shot his wife, Vanesa, and Castillo, then killed himself.