This is such a mess. It seems that the Massachusetts law on insanity is written in such a way that a non guilty verdict is actually the only logical one. If I've understood correctly, all the jurors have to decide is if there is a reasonable doubt that she was in her right mind. And there's plenty of evidence - between dr reports and toxicology - that she was not in her right mind.

The law is the problem here. Imagine a world where if there's any possibility that someone might be insane, they can't be convicted of murder.