she may have had some head injury that was unreported.........injured while drunk.
would be very interesting to know if Casey was always violating other peoples rights. Does Casey have a juvenile record? would love to have access to her school records to see if her behavior ever sent red flags up. was she ever referred by the child study team for evaluation? Did she see a neurologist after the seizure and did they take an mri? psychopaths often have frontal lobe damage
Maybe it was actually an overdose?