Cover ArtThis is one of my childhood favorites! I could give you a bland synopsis of the story or rewrite the blurb from the back, but none of these could possibly convey my love of this story or the depth of the tale. It is listed as juvenile/teen in the catalog, but I get something out of it every time I read it.
 
Publisher Description:
Harry Crewe is an orphan girl who comes to live in Damar, the desert country shared by the Homelanders and the secretive, magical Free Hillfolk. When Corlath, the Hillfolk King, sees her for the first time, he is shaken--for he can tell that she is something more than she appears to be. He will soon realize what Harry has never guessed: she is to become Harimad-sol, King's Rider, and carry the Blue Sword, Gonturan, which no woman has wielded since the legendary Lady Aerin, generations past.