Whoa. That's a big can of worms. Yeah, it might be possible, but honestly... Why bother? There are lots of women in the Seattle area that aren't afflicted with blatant bigotry.
If someone I was dating said that to me, she would be insta-dumped. And the fact that she was inculcated with prejudice by her parents is no excuse for a full-grown woman; if she can't form her own opinions, that's another strike against her character.
It could take you years to de-program her. If you are successful, how will you know that she truly believes what you've shown her, and isn't simply parroting what you've told her to say?
I say ditch her posthaste. But make sure she knows WHY you are dumping her bigoted ass. It will send a clear message that she needs to make some changes if she ever plans on living in the civilized world.