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|Magical Item(s) / Animal(s)||wand|
Jilly is described as having the same mean smile as her older brother. She appears to wear makeup and her icicle hair is wavier than her brother's stiff upright hair. She wears a spiky dress and cloak with matching shoes.
Not much is known at the moment, other than Jilly has the same hatred towards fairies and is quite close to her brother, saying that no one was better than him. She was thoroughly disliked by the goblins.
Jack Frost used Frances' magic to create himself a sister. At the end, Jilly annoyed Jack so much, he decided to banish her from the castle.
In this story, Jack Frost decided to take Jill back and she helped take part in his evil plans.
- She is one of Jack's two siblings; the other is Jimmy Thaw.