Ice Blood by Lisa Daniels

A power to kill dragons. And a dragon who wants to use it. Who is taking on more than they can handle, however? The dragon slayer? Or the dragon?

Mia has the power to defy gravity and endure the harshest winters. Mia also has the power to kill. Specifically, when it comes to dragons, who have a natural weakness against her gifts. And that’s fine by her. She’ll happily kill any dragon for the right price, since she’s not particularly fond of them. What she doesn’t know, however, is that her new, potential employer happens to be a dragon as well.

And he has other plans for her…