It was a horrific scene at a family birthday party as a mom fatally shot her two daughters before she was gunned down by police.
Fort Bend County Sheriff's Office identified the mother as 42-year-old Christy Sheats. They say Sheats shot and killed her daughters after a family argument turned deadly on Friday evening.
Madison Sheats was 17, her sister Taylor was 22.
Taylor was scheduled to marry longtime boyfriend Juan Sebastian Lugo on Monday, a family member posted to Facebook.
The tragedy unfolded in an affluent neighborhood near Houston as Christy Sheats exploded with rage, firing at her daughters as they fled into the street.
Her husband could be heard pleading: "Don't do this! They're our kids!"
Police radio traffic captured the drama.
The dispatcher was recorded saying: “There is a subject on location standing over one of the patients that has been shot. She has a gun. The subject went back into the residence apparently to get more ammunition.”
An officer then told dispatch: "Shots fired! I shot the subject."
Christy Sheats had a history of mental problems and had only recently reunited with her estranged husband after a separation. The family was celebrating his 45th birthday when she had what authorities called a "mental crisis."
Psychologist Dr. Jeff Gardere says filicide, killing your own children, is one of the most shocking crimes of all.
"This is something that is absolutely shocking and therefore, this isn’t just about someone losing her temper and then killing her daughters. There is something much, much deeper going on,” Dr. Gardere said. “You have to ask yourself, ‘How could this go so wrong?’”
Sheats reportedly owned several guns and recently posted a anti-gun control message on her Facebook page vowing never to give them up.
“It would be horribly tragic if my ability to protect myself or my family were to be taken away," she wrote on her Facebook page in March. “That’s exactly what Democrats are determined to do by banning semi-automatic handguns."