Wren's Quest

NY Public Library Best Books for Teen Age List, 1995Finalist for Mythopoeic Fantasy Award for Children's Literature, 1995Anne Spencer Lindbergh Honor Book, 1996. Wren thought she was an orphan. After discovering that she might have family, she wants to spend her first vacation from Cantirmoor's Magic School in finding them. But her quest turns into a far more dangerous adventure than she ever imagined, what with robbers, guardsmen, and an angry sorcerer after her.
And when her traveling companion, young prince Connor Shaltar, begins to meddle with magic as well, things get entirely out of hand. Meanwhile, back in Cantirmoor, Wren's best friend, Princess Teressa, is trying to get accustomed to living in court. Not so easy after all those years in an orphanage. Especially when someone is causing trouble in Cantirmoor, not just between courtiers, but magical trouble.
And Tyron, her friend, vanishes. It takes all four friends to solve this mystery.