The Extramundane Emancipation of Geela, Evil Sorceress at Large by Laura Brisbois

A holy priest and an evil sorceress hunting for her ex-husband. What could go wrong? Darkos, holy priest of Alerion, only ever wanted to defeat a great evil and complete his pilgrimage. But when he discovers his innocent, sweet, and catastrophically clumsy companion Geela is actually the exact evil sorceress he swore to destroy, his best-laid plans are turned on their head. In Geela’s defense, she only needed an escort home because her ex-husband changed the locks. However, Darkos has grown on Geela, much like a beloved pet. Or a fungus. Things might have gone sideways, but they can make this work. After all, Geela needs a minion to help hunt down her ex, and Darkos is convinced he can find a scrap of redemption in her cold, dead heart. But Geela might not be the only one whose soul needs saving.