Here's an idea for the fakeboy fixers out there:
Buy her a shock collar, as well as remote toys: A butt plug, vibrator, suction toy, breast pumps, anything that really gets her going.
Make her wear it whenever she's with you, especially when you're talking to other people. Every time she calls herself a guy, a man, anything that suggests that she'll lie to both herself and other people?
A light electric shock will do the trick.
But if she's doing a good job by calling herself a woman, your girlfriend, anything of the sort, she gets to feel a little bit of pleasure. Turn up the vibration or the pumping up a little more whenever she does it, and eventually, she'll just cry out: "I'm a good girl, I'm a good girl" over and over, moaning loudly as she starts masturbating like the dumb slut she is.
Maybe she'll even ask you to go out with you more often just so she can whore herself out in front of other people some more.
Feel free to try it on me as well if you like! :)