Michelle Kehoe allegedly first told investigators a stranger attacked her and boys . Authorities say she admitted buying duct tape , knife weeks earlier . Score: 6 Kehoe is scheduled to be arraigned on December 2 .
Michelle Kehoe allegedly first told investigators a stranger attacked her and boys . Authorities say she admitted buying duct tape , knife weeks earlier . 2-year-old is one of about 300 children slain this year . Kehoe is scheduled to be arraigned on December 2 .