First mistake is trying to be the nice guy, as soon as you try to be the nice guy you are 100% locked into the friend zone. Gotta be that guy that she wants. I personally would of told her that she deserves to be fired and she sucked at her job. Then I would take my next paycheck after she got fired, jerk off all over it and then take a pic and send it to her with a card saying
"Haha, I still have my job and I can jerk off on to my paycheck cause I'M RICH BITCH.."
Guaranteed she would be melted butter in your hands the next weekend..