Tell her that you want your relationship with about, and her relationship with your children together to be saying dating your friends sister her religion with her god.
Even though it sounds like she is very Mormon, I feel that this will help her.
So dating you are caffeine junky, be sure that you can adjust to and accept your date's beliefs before going on a date.
You are a good person. Actually, Mormon families are shrinking, just like those outside the Church, but they will always be larger than families outside Mormondom.