On her mind, her eternal salvation depends on marrying a worthy priesthood holder. Consider a mix of activities that are inexpensive, and allow you to talk and learn about one another. My boyfriend is in his second year of residency, and I'm still adjusting to this new situation. We talked during the break and saw each other a few times before he moved, but he finally ended things a month into the break telling me "he loves me, but is no longer in love with me" and "doesn't think he can regain the passion. The sons inevitably went inactive later in life. I think nothing really prepared either of us for fellowship though. She is extremely busy and tired almost all the time.
Then you might want to talk about all the things her church requires. It's hard right now because he's on a general surgery rotation so his hours suck and I never see him. Not unless she thinks she can convert you. Good luck to you and your family with the rest of fellowship.
You can consider some positive activities and allow you to communicate and learn from each other. She sacrificed two years of her life to convert people to the religion. My faith, while less orthodox, has certainly matured.
But life is long and eternal and all righteous people will choose the right at the end. Though, not everyone is looking for a free lunch out of a marriage. The history of racism and violence is upsetting. I'm not going to live my life in regret I know it sounds terrible but you gotta do what you gotta do. If this happens, it might click something in her mind that says that what she experienced was pleasurable and she would like to have it again.