The Undefeatable Queen. The Tyrant's Call, #2

Action-packed fantasy adventure with a butt-kicking heroine. After warding off Metheld's initial attempt to conquer Casaria, Alfred and Dandelion head into enemy territory to seek the aid of Queen Eris, a monarch known for being a peerless warrior whose kingdom never fell to the dark empire by force. Learning of her reasons for striking a deal with the Dominion, the pair reluctantly work together with a supposed rebel of questionable trustworthiness to motivate Eris and the country to rise up in revolution.
But as they look to finally overthrow the empire, the dark lord's forces also prepare to snuff out the last flames of resistance. A full length novel.