Everything you need to understand or teach Nettle and Bone by T. Kingfisher.
Nettle and Bone is a fantasy novel by T. Kingfisher about three sisters and an evil prince. The prince marries the first sister of the Harbor Kingdom and pushes her to her death, then marries the second sister and abuses her between forced pregnancies. Fearing a similar fate, the third sister sets out on a journey to kill the prince and save herself, her sister, and her kingdom from his wicked tyranny. Along the way, Princess Marra collects a band of misfit friends who help her with her quest. The novel explores determination, justice, fairytales, oppression, and patriarchy.