A mother was sentenced to life in prison on Monday for slitting the throats and stabbing her three daughters at their home. The mom committed the horrific act allegedly to get back at her husband. Coronado was found guilty in the May 2014 deaths of 2-year-old Sophia, 16-month-old Yazmine and 2-month-old Xenia. Prosecutors said Coronado killed her children before trying to harm herself. Coronado pleaded not guilty by reason of insanity, but a judge ruled she was sane at the time of the murders.