The Forbidden by Beverly Lewis (The Courtship of Nellie Fisher, Book 2)

The Church Split Has Not Extinguished Their Love,
But the Demands of One Man Still Stand in Their Way•.
Caleb Yoder's father has forbidden him to court Nellie Mae Fisher, but words alone cannot stop Caleb's devotion. Yet if he continues to pursue Nellie, he risks losing everything.
Nellie, too, is torn. She longs to marry her Old Order beau but cannot ignore the gentle pull she feels toward the faith of her New Order family. Can she and her beloved satisfy the expectations of the People while remaining true to their hearts?