Keeping the Genie — Dee J. Stone

Lily and Sebastian have somehow ended up in Sebastian's home world, Ortarus. Captured by the Ortarian palace guards, Lily is sure they won't make it out alive. To make matters worse, Sebastian's sister, who he thought was dead, is one of the guards. Or is she? Nothing is what it seems, and Lily learns that she's not just an ordinary human. She was brought to Ortarus for a specific reason: to free the Ortarians from a life of heartache and pain. Can Lily find the strength to fulfil her task? Can she be the hero everyone's depending on her to be?