Of course you can still be friends with her,just the same way you can be friends with someone who is living with her boyfriend, that doesn’t mean that you respect her opinion on this particular issue, or that you are a racist yourself. Just because racism is a less socially acceptable sin, doesn’t mean that this person is completely unworthy of your friendship. If you honestly like her as a person, continue being her friend.
I second deb1’s opinion. This isn’t merely racism (which is bad enough) that we’re talking about. We’re talking about white supremacy. You know what people think of when they think white supremacy? Lynchings! Burning crosses in someone’s yard! Holocaust denial!
As bad as having sex/cohabiting (in the context of a sexual relationship) outside of marriage is, at least people, misguided though they may be, believe they’re doing it out of love. White supremacy is outright HATE! That’s why it’s not socially acceptable!
I’m Catholic, of Southern European/Jewish ancestry (which wasn’t considered “white” in many circles for a long time), and I have a lot of friends who are black, Hispanic/Latino, Asian, or Jewish. There is no way I could reconcile being friends with a white supremacist for any of those reasons. But, as I’ve said before, we’re all GOD’S children and before Him, we’re all unworthy. What did Jesus say? To love each other! Not, “love each other as long as they’re your skin color,” but to love each other REGARDLESS! (by the way, Jesus was Jewish, so I don’t see how a Christian of ANY denomination can reconcile that with white supremacy)
White supremacy is the ideology that kept segregation and slavery for so long in this country, that got immigrants treated like dirt, that caused the Holocaust, that keeps abortion going (Margaret Sanger was a white supremacist), and that perpetuates terrible stereotypes about others.
To the OP: it’s your decision but these are things you should think about before you decide. Do you want your kids influenced by this ideology in anyway? Can you reconcile this with your faith? Your whole life?