Guilt, Escape or Revenge. The style of this suicide seems to be Revenge Recently reviewed a paper on the Forensics of Suicide.
It claims there are three reasons for suicide:
“Guilt, Escape or Revenge.”
My choice would be “all of the above”: guilt for being stupid enough to marry the POS; escape as in trying to get away from/rid herself of the same; revenge for all his transgressions against her.