Nancy Driscoll is the mother and killer of her children, Daniel and Dinah Driscoll, along with her husband Ted. The couple were conservatively religious and relied on faith healing when their children got infections, but they were treatable with healthcare, and the children died from being refused it.
The Driscolls were found not guilty of child endangerment, but guilty of manslaughter for Dinah's death. The prosecution worried they wouldn’t be sentenced to jail, but the convictions could prevent more child deaths. (L&O: "God Bless the Child")