I know I am a year late, but I need to give you some advice if you haven't gone and already done it. If she does not know God as her saviour, and she does not show any interest in accepting Jesus into her life, you need to forget about it. It is NOT going to work. I wish there were more people to warn us before we go and do something like this. If she is saved now and you are in a relationship I pray all the best for you both, but other than that. Do NOT do it. You are a Christian Man, and this non Christian woman is going to be the mother of your children... You can argue about Grace, but if the relationship is not glorifying to God, there is absolutely NO point in going down that path PERIOD.