The Demon's Possession by Kiersten Fay — book slip

Analia, a woman with a mysterious gift and pointed ears, has been enslaved on the spaceship Extarga for most of her life, with no memory of her past or knowledge of her people.

In a desperate bid for freedom, she escapes and stows away on the merchant ship Marada, captained by the fearsome demon Sebastian.

As she adapts to her new role aboard the ship, Analia must conceal her true nature while navigating her growing desire for Sebastian. Together, they face the dangers of open space, but Analia's secrets may endanger them all.