Williams, a mother of five, had just picked up her 1-year-old and 4-year-old children at a McKinney daycare when police say her estranged husband, Cedric McFail, 33, shot her in her car. Her two children were in the back seat.
Police say McFail, who was in the Navy Reserve, then shot himself two miles away.
The couple had no documented abuse history, but Williams had filed for divorce a few months earlier. She would have turned 36 the next day.