Sixshooter by Lyndi Alexander
Valeni Pascual wants to be free to make a living hauling cargo with her spaceship and to understand the shapeshifting alien who presents sometimes as the steamy male Nik and other times as the blonde bombshell Nikki.
As a rebel insurgence builds against the oppressive government known as the Agency, Valeni and Nik/Nikki encounter a sexy Terran cowboy named Garrett Rawls. Since being pulled into this region of space by another mysterious wormhole, Garrett has looked for a way to return to Earth. After meeting Valeni and Nikki, he might have found something worth staying for.
However, dark forces may have a much bigger picture in mind for all of them. Valeni, Nik/Nikki, and Garrett are pulled into a life and death fight that lays bare all of their secrets and their desires. Will they lose everything as the battle against the Agency rages around them or can love pull them through?