The mirror season

Summary: "When two teens discover that they were both sexually assaulted at the same party, they develop a cautious friendship through her family's possibly magical pastelería, his secret forest of otherworldly trees, and the swallows returning to their hometown, in Anna-Marie McLemore's The Mirror Season... 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. Neighborhood 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 the truth about that night. Because Ciela knows who assaulted her, and him. And she knows that her survival, and his, depend on no one finding out what really happened." -- goodreads.com