The Mirror Season by Anna-Marie McLemore

Graciela Cristales’s whole world changes after she and a boy she barely knows are assaulted at the same party. She loses her gift for making enchanted pan dulce. Neighbourhood trees vanish overnight, while mirrored glass appears, bringing reckless magic with it. And Ciela is haunted by what happened to her, and what happened to the boy whose name she never learned. But when the boy, Lock, shows up at Ciela’s school, he has no memory of that night, and no clue that a single piece of mirrored glass is taking his life apart. Ciela decides to help him, which means hiding... Read more.