These are the books by Sally Prue that are reviewed on this site:
He thinks he's an elf, but the Tribe don't want him. He's a liability. His fangs haven't grown. His voice is ugly. He's losing his sharp eyesight and hearing. Where can he go where he will be safe, and where does he belong?
The Devil's Toenail
It's that old conundrum - if the devil himself were to pop up and offer you a bit of help with your earthly problems, would you really want it?
Is Ryland bound to follow in his father's footsteps, or is there another way?