After reading some of the raws, she does "kill with a borrowed knife"[you'll see who
] (sorry this Chinese idiom comes to mind. Basically means when you do not have the means to attack your enemy directly, then attack using the strength of another. Trick an ally into attacking him, bribe an official to turn traitor, or use the enemy's own strength against him).
She then transmigrates to another time/era into another woman who was wronged and I suppose rinse and repeat