That's something I've thought of, as in her having the addiction.
Prozac will cause people to do crazy things, too. I know of a woman on Prozac who shot and killed her 5 year old, then wounded her 12 year old. He made it to a neighbors for help before he died. She did it about the time her husband should have been getting home from work. She left a note alluding to this. She had planned on killing the kids, then her husband, then herself, but her husband had to work late so he didn't come home as scheduled and when her 12 year old got away and she saw the police coming, she took her own life.