25 books
Escape to Mars
Kindred Souls
Indian Lands
The Orphan
The Daughter of Pan
Lady of the House
The Mutants
The Standing Stones
The One Who Wishes
Ghosts
The Last Messenger
Anais
The Mistfits Trilogy
The Guardian
The Dragon Twins: Pirate
The Dragon Twins: Princess
Return of the Ancients
Wild Indians
The First Team
Lost Angel
Scout Kii-jin
The Halfling Princess
The Voyages of Sara
Aisling's Woods