You're not wrong in most of this post, but your use of "nigger" really hurts your argument.

Women follow social trends, but they also follow men they view as powerful and strong. You don't have to abuse her, but make it known that her friend is wrong, she is wrong, and her refusal to adhere to any kind of moral consistency demonstrates a complete lack of morality of which you thoroughly disapprove.

My wife fucking hates when I disagree with her, but she also respects that I don't back down when I'm right.