She just had a mindset that allowed her to persist and prevail where she was outnumbered, outgunned and where the assailants not only had the drop on her but fired first.
Mind set is fine, but opening fire on her attackers because she was in fear of her life is what carried the day.
Yes, I know, minset and actually fighting are very closely related, but the term seems to be a catch all phrase for anytime the good guy wins. People oftern fight back when their lives are on the line on pure adrenaline more so than mindset. Then again, some might claim that fear produces the right mindset. The pyschologic vs. physical argument and how they intertwine is a complicated subject---like mindset vs. physical action.
Just my thoughts on the matter.