In the meantime, she will probably view you as being less than a Mormon man who is a faithful priesthood holder. I'm pretty disturbed by the level of dismissiveness seen in many of the comments here. I don't really care if she's religious or not, unless she brings it up all the time or tries to convert me. Be a good influence. All that being said, no one can tell you what is right for you except Heavenly Father.
My current atheism bothers him a little but as long as we respect each other it's fine. He's currently working in the ER and waiting to start his residency. And depending on his views of the Sabbath, you will probably get the tug of war on Sundays. When I taught GD we discussd the lessons. That would only encourage her to give up other standards that really are serious and to become like the typical Western degenerate. This was the biggest one for me. In her mind if you never accept the gospel you are denying her eternal exaltation as a God.
She will try to convert you. The first key question to as is: If the answer is yes then the relationship sounds like it's doomed. She went to BYU and did a 2 year mission, but since she was a girl she got to have a car instead of a bicycle. The dots are extremely close for every LDS person, its just extremely hard to connect them. In my view, baptism at 8 is just a variation on infant baptism. Ask questions, try to find out as much as you can. You can consider some positive activities and allow you to communicate and learn from each other. I know a Doctor who drug his wife and 2 children across the US to begin his residency. You will always be 2nd.
Otherwise her family will likely feel incomplete to her. I do my best to keep busy during the day, school, cleaning, organizing, going to the gym and my daughter. Does your new girlfriend have eight brothers and sisters. Somehow I never believed any of that; I wanted a career and a small family and never believed religion was a way to identify good character.