The story
Blend of bonnet + bodice ripper, referencing the traditional head coverings of Amish women.
Etymology from Wiktionary, CC BY-SA 4.0.
bonnet ripper
Today it means: A work in a subgenre of Christian romance fiction, which presents chaste courtship (typified by the removal of a bonnet) while avoiding explicit sexual content, and typically focuses on a woman from a traditionalist community (e.g., the Amish). Full definition →