911 tapes reveal how mom who gunned down both her daughters fist ignored teenager's 'don't shoot' plea - then shot sister, 22, in back as she ran for her life

In the chilling 911 call, Madison Sheats (left), 17, cam be heard begging her mother Christy (inset): 'Please don't shoot the gun.' Christy killed Madison and her sister, Taylor (right), 22, before being gunned down by police. Madison had told her friend how she and her mother had been arguing just hours before she was killed at their home in Katy, Texas. 


Madison's friend, who asked not to be named, told Daily Mail Online that she 'could just tell in her voice' that Madison was upset. Madison's sister, Taylor, would have been married on Monday. She had planned to marry her fiancé, her boyfriend of four years, Juan Sebastian Lugo in a small ceremony.