It's a shame they didn't show a lot of the trial because I was really interested in her defence.
As a purely armchair psychologist, I would say she demonstrated a lot of the characteristics of something like Borderline Personality Disorder and, as others have said, possibly Munchausens/Munchausen by Proxy.
To be honest though, mental health defences don't generally cut a lot of ice in a country where the justice system appears to be based on religion and revenge. It's far easier just to brand someone "evil" without really trying to understand why.