Wolf Star — Tanith Lee

The day before Claidi's wedding, she is kidnapped and taken to a mountaintop palace in the shadow of an unearthly star. Wolf Star Rise is the stuff of nightmares, with rooms that change and move for no apparent reason. The only human there is Prince Venn. Neither Claidi nor Venn knows why they are at the Rise. Can the two escape from the maze of taboo, repression, and mystery surrounding both of their long-lost families?

The Claidi Journals are "a diverting escapade for fans of Karen Cushman's Catherine, Called Birdy and Gail Carson Levine's Ella Enchanted."(Kirkus Reviews)