Going along with her cult might feel fine when it is just you in her, but if you have kids, it will be very different. After a certain point "support" stops being supportive and turns into enabling - enabling of his depression, his anxiety, his reluctance to reflect deeply on who he is and what he wants out of life, and worst of all, my "support" ensures his continuation into a career that will not ultimately make him or me happy. 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. When I taught GD we discussd the lessons. A straight-laced, returned sister missionary, raised in the cult, and in family of similarly entrenched cult members, will not likely remain happy with a non-member. They do exist and you deserve that. You should both sit down and have a serious conversation about what you want and what she wants and if you can both deal with the compromise.
I never really thought about the sacrifices the wife of a doctor must make. At parties, they drink soda and play board games. I guess I want to know if I do decided to start my future with him, should I expect to be constantly cheated on and be okay with it.
By all means, I encourage you to try having those discussions and to make a mental note of when you would choose to walk away instead. But she probably is more in love with the idea of you, than with you. But you can't make her think about the numerous facts that disprove Mormonism.
If you think you are, you might be. I am a non-Mormon who moved to Utah for college. Mormons are very particular about dressing. Thanks for pointing this stuff out.