The Amber Enchantress

When a dragon bears down on the world of Athas, an elven enchantress is forced to team up with the last person she ever expected: her traitorous father
 
Borys, the Dragon of Athas, was born of magic and is sustained by the agony of the doomed. For one thousand years, he has terrorized the desert wastes of Athas, roaming from city to city in pursuit of his gruesome levy—the lives of thousands of slaves.
 
The winsome enchantress Sadira now stands ready to challenge him.
 
But to do so, she must reach the Pristine Tower, the forgotten citadel still smoldering with the incredible magic that spawned the Dragon. Only one man can help her: her elven father, the man who sold her into slavery so long ago. Before the journey ends, Sadira must find a way to forgive his betrayal—or give herself over to the dark forces that still dwell within the Pristine Tower.