Sonora and the eye of the Titans

the long version

The King is dead, and the capital city of Titanis has fallen. The world of Sonora is at war, and the only hope against the onslaught of the Titan army lies with the last royal descendant of Zeus, who is being covertly sheltered on Earth in the secluded mountain town of Sandy, Oregon. Allora is a shy, intelligent sixteen-year-old, trying to get through the gauntlet of high school while coming to terms with her otherworldly origins. After getting into a fight at soccer tryouts, Allora's emotions boil over, and her hands suddenly burst into flames. She has harnessed the power of hadrons at the highest level, but at extreme cost. The magical outburst projects an energy signature that is detected by a group of assassins tasked with killing Sonoran rebels. To survive, Allora, Katie, Dax, and Tanner must find a powerful ancient artifact known as the Eye of the Titans. With the help of a guardian known as Sasquatch, they will have to fight off creatures, solve complex riddles, and navigate magical caverns, all while enduring advanced calculus, jealous girlfriends, and prom. -- Amazon.com.