I'm the wife of an intern and we try to make a night each week to go do something, just the two of us.
But I do still largely consider us an interfaith couple. As such, it tends to attract the young and insecure.
Don't let her try to bring in the missionaries to explain; remind her that she is an RM and knows all they do and probably much more.
Also, we haven't practiced polygamy for over years.