Mark Robson 
Dragon Orb: Firestorm [EPUB ebook] 

Dragon’s in Areth each have a single predestined rider and a single life mission, given to them by the Oracle. But this once all-powerful being is now fatally damaged and fading fast… Only the dragons and their riders can save it! Nolita is terrified of dragons! Learning to fly her day dragon would be dangerous enough without irrational fears to contend with and a vicious dragon-hunter on her tail. With Elian, another novice rider, Nolita seeks the first of four Orbs, whose combined power can restore the Oracle. Only Nolita, as a day dragon rider, can claim it. To do so, she must face her worst fears, and face them alone…