Revenge was most likely the motive for her trying to kill (only failed due to lack of time) the other death row inmate.

Committing premeditated revenge murder for making rude comments and possibly other actions is not simply “OK” because you had a rough time in the past. Other victims don’t get to just murder everyone they don’t like because they had a bad time. Hell, most rapists were probably raped them selves, not an excuse, considering other victims aren’t out there doing it.