“I’m surprised you didn’t hit on me!” seems to be a rather common instinctual homophobic response. There’s probably very little you can do. Your girlfriend should try to be re-assigned or seek out internal arbitration – she should work under such a disrespectful person. This, however, may be risky if she’s not generally out. In more enlightened cities, being out may not be a big deal, but I understand there are a lot of Utahs around too. Barring that, probably the best thing to do is quit. Sexual harassment is sexual harassment, even if it’s straight woman on lesbian woman. She probably has grounds to sue, though IMHO she’s better off just letting the next person deal with this bitch. Maybe the best thing you can do is help her transition to a better environment where she’ll be treated with more dignity.