The Queen - The Genoa Chronicles, #3

With the brutal murder of her parents, Tress assumes the immense responsibility of unifying Genoa. Ruling a vast kingdom of wizards, sorcerers, and mystical creatures, she fights to rid Genoa of the tyrant, Gillard. Surrounded by spies and the threat of war, Genoa's only hope of survival lies in Tress' long-awaited reunion with the fearless dragon-warrior and the prized scholar in her protection.