Oh Brother!, Not only was the Shooters Mum a Gun Nut she was a PREPPER. A person who prepares for social chaos by hoarding supplies and training with weapons. What an idiot, how about just focusing on getting through each day and making sure your son doesn't commit mass murder killing you in the process. Their is so much tolerance for CRAZIES in America, if someone we knew began hoarding food, collecting weapons and talking about the end of the world, well, that would be a sure sign of serious mental illness and the Nut House wouldn't be too far away. But in America, thinking like that is NORMAL for most folk, what a strange place America is!
So the Mother was a Disturbed Nut JoB who raised her child to believe THE END OF THE WORLD WAS COMING, kid never had a chance. He probably thought he was doing those kids a favour, putting them out of their misery because the end was just around the corner. The Mother looks like a complete idiot now, preparing for economic collapse and she gets murdered by her own son, what an Idiot!