This is an ignorant statement. It is quite obvious Mrs. Lanza had no idea how "troubled" her son was as she was the first to go. I can't imagine her knowing her boy was a psychopath and not locking them up in a gun cabinet. Point of fact, she didn't. Many people are loaners or quiet and don't shoot 20 little kids 10-15 times each. Or anyone for that matter. Also for the record the killer could have just as easily walked into the school with a sharp butcher knife and killed people before he was apprehended. Should she of also kept her knife block in a safe?
Where does it end?