Kiara King and The Enchanted Emerald

Kiara grew up in a secret, magical city buried under the earth. She lives a happy existence in Emeraldo as the daughter of the queen, until her twelfth birthday when her parents are brutally murdered by the power-hungry Chief Administrator. Kiara escapes with her life, and the secret to ruling the city of Emeraldo. Finding herself in the strange Land Above, she discovers a new family kept secret from her.
But safety doesn't last, and when her family's murderer follows her to her new home, she must use all her powers to protect herself and her new family