Nettle & Bone is a 2022 fantasy novel by Ursula Vernon, writing as T. Kingfisher. The novel has been described as a dark fairy tale. It won the 2023 Hugo Award for Best Novel and was nominated for the 2023 Locus Award for Best Fantasy Novel, and the Nebula Award for Best Novel of 2022. Plot. Marra is the youngest of three princesses. Her eldest sister Damia marries Prince Vorling, but dies several months later. Kania, the middle sister, then marries Vorling. Marra is sent to a convent. Kania's daughter dies. At the funeral, she tells Marra that Vorling is abusing her.
https://en.wikipedia.org/wiki/Nettle_%26_Bone