Amber and the Hidden City (PB) (2013)

Thirteen year old Amber Robinson's life is full of changes. Her parents are sending her to a private school away from her friends, and high school looms before her. But little does she know that her biggest change awaits in a mysterious city hidden from the world for a thousand years. Why? Amber's grandmother is a princess from this magical kingdom of Marai. She's been summoned home to use her special abilities to select the new king but she no longer has the gift, and her daughter was never trained for the task. That leave only one person with the ability to save the city: Amber! But there are those who are determined that Amber never reaches Marai and they will do anything to stop her. Prepare yourself for an exciting adventure that spans from the Atlanta suburbs to the grasslands of Mali. It's a story of a girl who discovers her hidden abilities and heritage in a way that surprises and entertains.