Clementine. Hodder Silver Series

Aurora is the daughter of a lord, and Clementine of a servant, but both children are blessed by the fairy Woodland Ladies at their joint christening. Then the vicious oldest Lady, Tarabosse, prophesies that, at sixteen, Clementine will betray Aurora to death. The curse is lessened to a hundred years' sleep, but the girls are sent deep into the woods to try and evade it. Educated in the old magic and protected by the Ladies, they grow up as sisters, but must finally return to the castle. Disaster cannot be averted, and the castle falls into a deep slumber. A century later, a young amateur scientist, Lord Arthur, and his friend, Raphael, are entranced by legends of the enchanted wood. They search for it. And they find love, but also that the science, technology and political progress of the new age are no match for magic untouched for over a hundred years...