Bhyr by Penelope Fletcher

Bhyr, leader of the Azteka Horde, is committed to saving his species from extinction. Taking the human female as a breeder is his divine right. He will breed her, anoint his spawn, and then rid himself of the complications that come with a mate. But when the time comes, will he be able to strike down the one he loves most?
Indira is abducted from Earth and leashed to an alien barbarian. He wants one thing of her: an heir. Vowing to escape his clutches, Indira begins a revolt that causes ripples throughout the galaxy. But as she strives to thwart the most feared being in the universe, she must question how the warrior she defied became the darkest desire of her heart.