Female mass murderers plotting shootings with aim of high body counts

From Columbine High School to Orlando's Pulse nightclub, horrific mass shootings planned and carried out by men. However, some women made plans of their own. Joining Nancy Grace today:Kirk Nurmi - Jodi Arias former Attorney, Author "Trapped with Ms. Arias Parts 2 and 3, My Final Words"Dr. Bethany Marshall - Psychoanalyst, Beverly HillsSheryl McCollum - Director, Atlanta Cold Case Investigative Research InstituteLevi Page - Investigative Reporter, CrimeOnline