Suicidal Granny Kills 2 Grandkids, Son-in-Law 'My mom has gone crazy,' survivor tells cops By Rob Quinn, Newser Staff Posted Sep 24, 2010 4:36 AM CDT 3 comments Comments Neighbors look on at the scene of yesterday's shooting in southwest Seattle. (AP Photo/Elaine Thompson) (Newser) – A Cambodian immigrant shot and killed her son-in-law, two teenage granddaughters, and herself yesterday in Seattle's worst shooting incident in years. "My mom has gone crazy," a daughter who survived bullet wounds told police. No motive has been established. Family members say the 61-year-old matriarch was mentally ill. "Grandma just shot them for no reason," a family member who arrived at the home shortly after the shootings told the Seattle Times.