Please…you may have good intentions, but it’s best not to maintain contact, even negative contact, as most likely, she was coached by someone in her Church, since early in your friendship. She knew, probably almost from the beginning, that you weren’t likely to end up together. Ignoring her is the best way to deal with her now.
Mormons take defection from their Church very seriously…she stands to lose all of her family and friends. Don’t think of how great it would be to have family and friends as close as those Mormons do, or that you may have seen, or heard about…think about how she’d be afraid of losing such relationships! I know I sound harsh, but there are many documented examples of such relationships turning out false. Think about practicing your own faith, and, when you’re ready, see if you can find a woman who believes what you do, and can be honest with you.
Take care, and God Bless!!!