How to deal with a homophobic 'friend'?

My friend is always making these awful comments about gay people. So yesterday I got really irritated by this particular comment she made and I ask her why she hates gay people so much. She told me she's scared that if she has a lesbian friend that they might have secret crushes on her and that it would be really awkward and that it's not normal to like someone of the same gender( keep in mind that this is the nicest reaction I had yet on this subject)

So now I don't know how to go about this considering I'm basically her worst fear come true. I really don't want to stay friends with her but I'm afraid to make her angry, because she's quite the bully and not just verbally. I have marks all over my body from when she gets angry. And I'm scared that she would suspect I'm gay if I tell her I don't want to be around her and she won't hesitate to tell anyone she can find.

Any advice?