“Acorna’s Search” by Anne McCaffrey and Elizabeth Ann Scarborough.
Title: Acorna’s Search Series: Acorna Number in Series: 5 (five) Author(s): Anne McCaffrey, Elizabeth Ann Scarborough Cover Artist: John Ennis Language: English Publisher: Eos Books Published: December 2001 ISBN-10: 0380978989 ISBN-13: 9780380978984