Great book on the topic:
When Only One Converts
by Lynn Nordhagen
Our Sunday Visitor press: 2001
Lots of great stories of mixed marriages and how each couple (or family) dealt with the situation – sometimes ending well, sometimes not.
From the back of the book:
What happens when the two most important relationships in your life seem to be on a collision course? How can you be obedient to God when obedience threatens your marriage vows? Can you love God if it means hurting the one you love most on earth?
Many couples have walked this path. Fifteen of them share their stories in When Only One Converts. Author Lynn Nodhagen offers stories, not only to the Catholic (or soon-to-be Catholic), but also to the spouses who are not becoming Catholic, praying that they may gain insight and hope, recognizing that this can be, for them also, a time of discovery and growth in the Christian life.
Endorsements are by Patrick Madrid, Mark Shea, Kristine Franklin, and others. Example:
At long last, a book for the converts who go it alone. The writers are honest about the grief and frustration of living with a spouse who can’t or won’t “get it.” And they are refreshingly transparent about their own shortcomings, insensitivities, and even sins. Despite the pain that each one of these individuals has experienced, hope in the love of Jesus and trust in the power of His grace are the melody and harmony of this book. (Kristine Franklin)