The Sisters of the Winter Wood by Rena Rossner From Goodreads: Raised in a small village surrounded by vast forests, Liba and Laya have lived a peaceful sheltered life – even if they’ve heard of troubling times for Jews elsewhere. When their parents travel to visit their dying grandfather, the sisters are left behind in their home in the woods. But before they leave, Liba discovers the secret that their Tati can transform into a bear, and their Mami into a swan. Perhaps, Liba realizes, the old fairy tales are true. She must guard this secret carefully, even from her beloved sister. Soon a troupe of mysterious men appear in town and…