Books like The Unbreakable Spell by Jayne Ann Krentz

Rocana Brunt lives confined and scorned by her Duke and Duchess guardians, whose disdain stems from her father’s debts and her mother’s French origins. Determined to escape the oppressive walls of Bruntwick Castle, she discovers that her cousin, Lady Caroline, is forced into a loveless marriage with the Marquis of Quorn to avoid scandal. Rocana offers herself in her cousin’s place, believing this deceit will free Lady Caroline to wed her beloved Patrick and help her own future. The ruse remains hidden until Rocana and the Marquis travel to Paris, where Caroline and Patrick are happily married. Along her journey, Rocana’s own magic and daring escapades kindle a new possibility for love and freedom. This tale blends court intrigue, cunning sacrifice, and enchanting magic, following Rocana’s path from oppression to hope as she seeks her own true happiness.

First publish date: 1999