Grave Mercy by Robin LaFevers

His Fair Assassin

Set in 15th-century Brittany, this historical fantasy novel follows Ismae, a young girl who escapes a brutal arranged marriage and finds refuge in a convent dedicated to the god of Death. Trained as an assassin, she is tasked with eliminating those marked by her god, but her mission becomes complicated when she is sent to the high court of Brittany. There, she must navigate political intrigue, uncover dangerous secrets, and confront her own beliefs about justice and loyalty, all while grappling with her growing feelings for a mysterious nobleman.

Purchase from Bookshop.org