Something like this happened to me once. She cheated on me for this other guy. I told her I forgave her. And gave her a paid trip to puerto rico. Suffice to say when she got back I had her crap in a u-haul truck, and dumped it all out in her workplace parking lot for all her co workers to see. I even sent the pics of her cheating to her co workers, her parents, and friends. And after that I told her to go stand on the side of the road with her stuff and go hitch hike a man for a dollar like the hoe she is. Suffice to say If I were in Op's scenario, I would traumatize her.
I'd do the exact same thing. Ho's like that need to be punished like this.