She will be oh-so-grateful if you do not pressure her to discard those values.
And I don't have issues with her, hell, haven't even seen her in over 20 years, but the experience with the whole Mormon thing gave me better insight in to many things in life. OP Have you seen the Brother Jake videos.
Your relationship with your family will be healed, and so will you.
That would only encourage her to give up other standards that really are serious and to become like the typical Western degenerate. Follow the footnotes and you start to find the lies.