Victoria Hanley 
Indigo Magic 

Discover a world of fey magic and dark secrets . . . Zaria Tourmaline, a young fairy with exceptional magical strength, is on the run after escaping from the evil Lily Morganite, who will stop at nothing to gain control of Feyland and its people. Since discovering that her parents might still be alive, Zaria, along with her friends, sets out on a quest to find them and free them from the dark enchantment that Lily has cast. Zaria is also in possession of a rare substance – an indigo bottle that contains a malevolent powder capable of destroying magic . . . But will she be able to keep it from falling into the hands of Lily Morganite?