Sybil the Backpack Fairy #2: Amanite (Sybil the Backpack Fairy Graphic Novels)

Nina loves having her backpack fairy Sybil around! Nina is the only person who can see or hear Sybil and the two have formed a special bond. But when Sybil unexpectedly disappears, a new fairy named Amanite shows up to take her place. Amanite brings Nina to a magical underwater world, where Nina is magically transformed into a tiny mermaid! But then thigns go horribly wrong when sea monsters decide that Nina look mighty delicious! Where's Sybil when Nina really needs her?