Scale of the Dragon by Richard Fierce

Her key to freedom is also her torment.

Mina is an outcast. A childhood accident left her scarred and with a curse that her master exploits to hunt dragons for sport.  

She wants freedom, from both her master and the curse, but unless the right dragon is killed, she’ll be a bondservant for the rest of her days. 

With Mina’s uncanny ability and her master’s magical strength, the beast responsible for her misery will fall … even if she has to take matters into her own hands.

Scale of the Dragon is the first episode in the series Marked by the Dragon.