Taintskin - New F/F Science Fiction by Geonn Cannon - all female crew!

Five years ago, humanity was close to losing a war against the Cruakhan, a brutal alien race. Salvation came from an unexpected surrender by the aliens, but they remained occupying a planet on the edge of the system... waiting. Now, a crew of rogues and outcasts are hired to ferry a woman to the enemy's stronghold. Along the way, they discover a secret that could end the cold war between humans and the Cruakhan forever... if it's not used to finish humanity first.