you COULD do that shit about leaving your workplace, but I don't think anyone deserves that much effort...
what you should do, as 60 years of challenge says
tell her that you can't be near her cause you are horny for her, you only think about fucking her in the ass and that she's not safe around you.
now, this could go 2 ways:
1.- she gets away from you (good)
2.- she still hangs around with you but now she KNOWS what she's getting into (in simple words, she knows she's getting fucked by you)
and dude, have options! you wouldn't care so much about her if you had more options!
success!