Danger in the Stars by Veronica Scott

Miriell, a powerful empathic priestess, has been kidnapped from her own primitive planet along with a number of her people, and sold to the evil Amarotu Combine, largest organized crime syndicate in the Sectors. When she and her handler are sent to use her power to commit an assassination, she must leave behind her own sister as hostage to ensure her compliance. Miriell cannot ask for aid without endangering herself and others.

Despite his best efforts, Combine enforcer Conor Stewart is entranced by Miriell, and helps her evade the worst of brutal treatment from the rest of the mob. But Conor must keep his distance, before the lovely empath learns that he has secrets of his own–secrets that could get them both killed.

The situation becomes dire when Conor and Miriell come to the attention of both the Combine overlords and the deadly Mawreg, aliens who threaten the Sectors. Can she save herself and the Mawreg’s next victims? And will Conor help her, or remain loyal to his evil bosses?