First of all, I would like to say that I thought Christianity was a religion based on love. I thought that members of that religion were supposed to express love rather than hate to all those around you under all circumstances. I mean, if Emily does not love everyone, I don't think she is really a Christian. I mean, most Athiests are more Christian than that.It's more than just a little hypocritical, since NS is based on hate. Maybe something happened to Emily that made her harbor so much hate for others.....
Anyway, in regards to your question, sit her down with you while you are alone. Tell her just how much you care about her, and how much you want to be with her. Tell her your situation. No relationship can survive without communication, and if you don't tell her the problem you have with her ideas and attitudes on certain issues it will definately not last. I think it is great that you want to get married to her, but you must talk to her about how you feel if you expect anything to change. Anyway, if she gets offended, so what? She hasn't exactly been trying to not offend others or anything. Just make sure she knows that you are serious about the relationship. I am sure everything will be alright.