I vaguely remember reading this story years ago, but can't remember all the details and I'd like to reread it.
There was a girl who lived near a big old posh house. In the big house there lived a man/boy who she befriended but he was either mute or didn't talk much. I think he was beholden in some way (like a spell) to the woman who lived there. I think this woman was evil in some way - but definitely magical in some manner. I think the girl grows up during the course of the story (I can't remember if the man/boy does). I think she and the man make up stories/games. The man was special in some way and I think the girl realises that anything he made up would come true. I think there was an accident in the book, maybe a car accident, which helped him to break the spell over him.
I'm sorry this is so vague, I would appreciate any insight people could give!
It sounds as though you're thinking of Fire and Hemlock (http://www.amazon.com/Fire-Hemlock-Di...), by Diana Wynne Jones, which is one of her books by older readers. The girl is called Polly, and the man is called Thomas Lynn, who is under the power of a woman called Laurel.
There was a girl who lived near a big old posh house. In the big house there lived a man/boy who she befriended but he was either mute or didn't talk much. I think he was beholden in some way (like a spell) to the woman who lived there. I think this woman was evil in some way - but definitely magical in some manner. I think the girl grows up during the course of the story (I can't remember if the man/boy does).
I think she and the man make up stories/games. The man was special in some way and I think the girl realises that anything he made up would come true. I think there was an accident in the book, maybe a car accident, which helped him to break the spell over him.
I'm sorry this is so vague, I would appreciate any insight people could give!