A Hat Full of Sky - Terry Pratchett

Something is coming after Tiffany Aching . . .Tiffany Aching is ready to begin her apprenticeship in magic, but life isn't exactly what she thought it would be. She expects spells and magic not chores and ill-tempered goats! Surely there must be more to witchcraft than this? But when a sinister creature starts pursuing her, Tiffany realises that she'll need her magic more than ever to fight it off. And this time, neither Mistress Weatherwax (the greatest witch in the world) nor the fierce, six-inch-high Wee Free Men can protect her.In the end, it will take all of Tiffany's inner strength to save herself. Will she succeed?