The Adventures of Amina al-Sirafi by Shannon Chakraborty

Amina al-Sirafi should be content. After a storied and scandalous career as one of the Indian Ocean’s most notorious pirates, she’s survived backstabbing rogues, vengeful merchant princes, several husbands, and one actual demon to retire peacefully with her family to a life of piety, motherhood, and absolutely nothing that hints of the supernatural. But when she’s tracked down by the obscenely wealthy mother of a former crewman, she’s offered a job no bandit could refuse.