After the mass shooting in Las Vegas, 87 children are coping with the loss of a parent. Of the 58 people killed at the Route 91 Harvest festival, 33 were parents. The youngest child to lose a parent was just six weeks old when his mom, Rocio Guillen-Rocha, was killed. Losing a parent in such a public and traumatic way can send a child into a tailspin, UNLV clinical psychologist Michelle Paul says.