She-Mouse Girl from https://bedtimestoriesforall.com/

Indian Folktale: The Hermit, the Mouse-Maiden, and the Lesson on True Nature

A kind hermit living by the River Ganga rescues a baby mouse and magically transforms her into a girl to fulfill his wife's wish for a daughter. As she grows up, the hermit seeks divine suitors for her. This heartwarming tale explores themes of kindness, transformation, and the enduring nature of one's true self, culminating in the moral that one's true nature never really changes.