Brass Stars by A.G. Carpenter‏

A.G. Carpenter writes fiction of (and for) all sorts. She studied film-making in college, but quickly discovered that pen and paper are a less costly medium. She likes: movies where things explode, rainy days, strong tea with lots of milk and sugar. Her favorite color is black.

She lives in the South-eastern United States with her husband, their lively son and a herd of cats.

Twitter: @Aggy_C
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Tashndelu Sand has wandered the known universe on a mission of vengeance. She’s spent years tracking down the gang who murdered her mother. And, with the help of Snyder—a psychotic cyber-horse with an agenda of his own—she’s killed all but one: Brannigan. 

Now she’s come to Paradise, a lonely town on a desert planet. Here, Brannigan rules with a new gang. Here, the graveyard is filled with the corpses of gunslingers who have tried, and failed, to kill him.

Get in, kill Brannigan, and get out. That’s the plan. And Tashn is determined to finish what she started. She’ll not be stopped: not by Brannigan’s army; not by her feelings for Johnny, an Extra sapien like her; not even by the darkness she sees in herself.