I married a non-member over 20 years ago. There are many great and wonderful people in the church, and the real evil about the church is that it harms those great and wonderful people. For every lesson and sermon preached about loving everyone, there are one or two lessons on avoiding outsiders because they will destroy your eternity. Dont aggressively try to destroy her faith but bring up philosophical thinking points.
I read through a few of the LDS. You should not be trying to be exclusive with one person, so go on dates with as many people as you can. My parents met when my mom was in 8th grade and married when she was I think my sister married fastest and knew her husband at least 18 months, dating for at least half that. I've read through some stuff there and it all seems pretty tame so far. Finding a person with whom your wavelength matches, and around whom you feel you can just be yourself, talk about anything, and not be worried about being judged, is not as easy as the romantic movies and TV soaps make it out to be.
During "Netflix and chill" the other night, I noticed there was a documentary about mormons. In regards to my current situation, I feel like a lot of the time he doesn't understand that things like MCAT's and studying undergrad or med school come first. The envy of all of our friends. You might need to trade missionary lessons for research on her part, and we can suggest less scary resources. Otherwise her family will likely feel incomplete to her. When out on a date with a Mormon guy or girl, be very decent, courteous, and well-mannered. I just returned from a difficult meeting with my psychotherapist and felt depressed-then I found this amazing blog.
Are they a functioning member in society. Be open-minded; accept that different people have different beliefs, and that they do not always have to match with yours. Righteous love does conquer all but in some cases it takes a lot longer than we are willing to wait. Welcome to the future.