Fated Possession by Cari Silverwood

While on a chaste pilgrimage to the Chasm, Sassik buys Blue to save her from violation.
Yes, he will train the stubborn human and punish her when needed, but when Blue willingly opens her legs for him, he understands the depths of his twisted desires.
Selling her can be his only option.
The gritty, violent world of Aerthe will crush the life and spirit of anyone not able to fight for their existence with weapons, teeth, and claws.

But Blue is from Earth.
Having recently escaped from being kept as a blood-slave, being owned is way down at the bottom of Blue’s bucket list. If she can’t escape, maybe she’ll do the next-best thing and take down Sassik while trying.