I've worked with persons with BPD for over 25 years. it is possible. People with that disorder typically have abandonment issues-which may account for Mary's intense jealousies regarding her husband. Also, because she lost a parent at a young age it may have led to the disorder.
They used modern day standards in deciding her fate. The audience did the voting, and it was about 266 votes for not guilty and about 68 votes for guilty.