The Bone Knife — Intisar Khanani

Rae knows how to look out for family. Born with a deformed foot, she feigns indifference to the pity and insults that come her way, learning to be wary of all things beautiful. So Rae instantly distrusts their latest visitor: an appallingly attractive faerie whose mere presence imperils the secret her sister guards. But when the local townspeople show up demanding his blood, Rae must find a way to protect both her sister's secret and their guest. Even if that means risking herself.