The Autumn Castle (Europa series - Book 1)

Blurb

The Autumn Castle is a 2003 horror/fantasy novel by Kim Wilkins. It follows the story of Christine Starlight who has strong memories of her childhood friend, Mayfridh. Mayfridh was then abducted by the king and queen of a Germanic faeryland and is now on the throne of the Autumn Castle. Now the human and faery worlds have joined with Mayfridh falling in love with Christine's partner and Christine venturing to the faery world.