The Empress Game by Rhonda Mason
This is the second in the Empress Game trilogy that set up Kayla Reinumon as a serious heroine who is caught up in the politics of the Sakien Empire and the Empress Game Tournament. Thankfully, the tournament is over, but for Kayla, her mission has only just started. If she wants to free the people from occupation and slavery, she must do the ultimate thing - continue working undercover after her win at the tournament.
