The Witch and the Nightingale

In this updated retelling of the Brothers Grimm's "Jorinda and Joringel," a shape-changing witch protects her privacy at all costs.
When the engaged couple Jorinda and Jacob stumble into the witch's part of the forest, she takes them captive. The hateful witch changes Jorinda into a singing bird. Will her fiancé save her, or will the witch keep her singing bird caged forever?