Possum Magic by Mem Fox

Grandma Poss uses her best bush magic to make Hush invisible. But when Hush longs to be able to see herself again, the two possums must make their way across Australia to find the magic food that will make Hush visible once more. "Another treat from Mem Fox that is sure to be treasured. The whimsical illustrations are a wonderful complement."--Children's Book Review Service