Operation Cobalt by L.L. Richman

Just a girl, her dog, and one epic grudge match.

Katie wasn’t there when radicals took over Sierra Twelve. But she’s back now, and she’s out for blood. She might be young, but she’s smart and resourceful. And no one knows their way around that space station better than she does. It doesn’t take long before the terrorists realize they picked the wrong girl to mess with. The situation rapidly unravels as Katie and her dog Fred yippie-ki-yi-yay their way through the space station she calls home.
Because when Katie goes to war… she takes no prisoners.
This is a fun, fast-paced standalone in the Chiral Agent universe.