Compassion For Killers

In The Nation, Lilliana Segura writes about a slow 14-year old girl with mental health issues who killed two boys in a fire that she set. That was in 1976. She is still in prison. Should she still be there? 

Of course, I devoured the New York Times's Magazine story about the 9-year old pyschopath

Are we reaching a new understanding of mental illnesses? Will this have an impact on law?