Rhianna and the Wild Magic

Fantasy novel for late primary and early high school-age readers. Everyone in the land knows that you can't live without magic, which controls everything. But what happens when the magic goes wrong? The sequels are 'Rhianna and the Dogs of Iron' and 'Rhianna and the Castle of Avalon'. Author's previous titles include the Tenabran Trilogy, which has won three Aurealis Awards.