This sub is a great place to do that. How church discipline works. By Thursday, I'd feel like he disappeared. When my daughter needs challenged in soccer, I took her everywhere, I studied vocabulary list with them, wrote essay with them, math facts…….
Interfaith marriage is but one variety of the learning experience. Otherwise her family will likely feel incomplete to her. It's definitely not an easy life. Every bishop, new set of missionaries, home teacher, etc. Except his wife was and still is a witch. Being married and raising a family can be very difficult if the two of you disagree about important issues like religion. Although with the change in times, people may not follow these rules as stringently as before, it is still better to be careful so as to not offend anyone, and you may possibly land up with the love of your life. All the other stuffв is crap.
This girl is also a real person, not a caricature of a cult member, and even if the ultimate result is a breakup, she deserves to be treated with compassion and respect. And once you are done with those, ask about social issues and where she stands. A lot of shared hobbies, interests, life goals. My wife is living proof that they CAN be worth it. When you try to explain to them why the church would not publish said info on their own website they get mad at you and tell you you're ignorant. We are a welcoming community. She is showing a common attitude of distrust for "anti-mormon" material. Yes, anyone crazy enough to believe the story of gold plates should be able to rationalize a brown rock.
Word to the wise, wait a day or two. When I was a teen, my first boyfriend was a convert and people would comment on that instead of how nice he was to me. I do not see this going well. If you are a Catholic girl dating a Mormon guy, then it may not be an issue with his parents.