Is this an original storyline?

I like to write, mostly fiction. But I haven't been able to finish anything. So I decided to write a short fairytale. The plot is a little like this:

The kings daughter is tempted into the woods by the familiar of two dark sorcerers. This familiar directs her to a path that leads to the hunting grounds of a malevolent wandering demon. This is their plot to kill her. But the plan is sent awry when the girl offers food to the demon, befriending it. This incurs a sort of, "curse" upon the girl. A wreath of thorns is curled over her wrist, her hair turns black, and eyes orange. She runs back to the castle but is cast out an almost killed after they recognise her curse. She flees into the woods and is guided by the demon, now bound to her, to the cottage of a witch. She is raised here as an assistent to the witch until she reaches her say twenties or late teens when the king orders an inquisition to kill those who are considered "evil". She then comes upon the sight of her surrogate witch-mother being burned at the stake and swears vengence. Her quest is a rudimentry, "the king is bad so i must kill him" not very original. Anyway the creatures of darkness find her as a sort of pioneer in their quest for equality and she is known as "child of the thorns" because of the thorns on her wrist. She kills the king who turns out to be her dad and the last line she says to him is somthing like "you may be my father, but you were never my king."

So, is it too basic or uncreative?