A look inspire from a book character, from "Ocean at the End of the Lane".
Character: - Ursula Monkton - Skartach of the Keep. A Spirit as old as Time its self, evil and missunderstood, first appears at as a mass of wripped cloth and bandages caught amongst the trees. Finding a demonic liking to our story's antagonist, the creature then takes the form of a beautiful woman; who intends to seduce the angonist's father, and control his life from a physical relm.
This application was my interpertation of the transfomation between the Skartach and Ursula Monkton