You might want to determine your level of willingness to put up with his demanding work schedule and to communicate with him about your needs and concerns. It's the sort of super dismissive "all women are the same" attitude that I learned in church and left to get away from. Of course we are talking abt kids and marriage all the time. Pray about it and follow your heart. You aren't engaged or married or anything, you can't just know that she won't see the light and remain crazy Mormon forever. Word to the wise, wait a day or two. He isn't in school and doesn't have much idea about what it is like to be in my shoes.
Tell her that you want your relationship with her, and her relationship with your children together to be separate from her religion with her god. Our daughter is 6. The thing about General Authorities and General Conference, is that they give general counsel that is meant for the general population.
Mormonism isn't a free ticket to heaven. Despite whatever may come our way, this relationship is the most important and even though it's forever it needs to be nourished. If you don't want to give up, then don't. You should ask Him what you should do, as no one else can see the end from the beginning and no one else has perfect love for you and for your potential husband. When DH comes in he is still gone more than half the time. There are many good things.
Let's talk about kids. It is not the norm. At the end of the second date I knew I needed him in my life. And her husband now is dead and she is left to wonder about their future. She was so sad over what she sacrificed it just haunted everyone on Reddit. Be direct and get your needs met. If your relationship has gotten very serious, your girlfriend will probably try to find agreement in your faiths. But, if ever were there were a time to be overly cautious it's with this topic. She really likes me, and if she could change one thing about me it would be my lack of religion.
