Mildred is excitable and has a habit of getting in over her head. She is kind-hearted, and means well, but tends to get carried away with herself. Owing to overactive magical glands, this often results in her casting spells that go wildly out-of-control, or that have unintended consequences She is turned immortal, like her sister, after she drinks the latter's immortality potion. After running away from Ms. Mary's in hopes of finding her parents in The Frozen North.