I had this image in my favorites for a long time, before I was on deviant art, in fact, since I found it back then on Tumblr (no clue if you had an account there or if someone else posted it). Used it once there to illustrate a text about a relationship. I really like it.
Nice picture. But she's using swords.
Where I come from, we Borgias have a saying:
"Revenge is a dish that is best served....
(Bet you thought the proverb would be something you've heard before.)