All my family is dead including my very mentally ill mother. Walk a mile in my shoes before you spout off about something you know nothing of.
Your shoes don't fit.
Mental illness is no excuse for avoiding punishment that fits the crime. Adults who murder children should be executed. There is absolutely no excuse for you to come to the defense of this perp.
Or as a fictional character would say to the woman:
"You're an adult. Your victims are children. There's nothing you could say to make me feel sorry for you."