Zahara's Quest by H.M. Gooden

The last thing Zahara expects to hear when she's summoned home is that her family has been cursed. As the truth behind the family legend becomes apparent, things become even more bizarre.

Vowing to return a mysterious emerald necklace sent by an aunt she's never met, she'll have to rely on the help of friends to face the past and defeat an ancient foe.

It's a good thing she's got the stubbornness and cunning of a fox to see her through because if she doesn't succeed, her future will vanish forever.