The Stowaway Corpse: A Fortanach Spaceship Mystery - Fortanach Outfitting Stories, #1

Relax, they told her. Enjoy the trip. This was the advice given to Ronnie as she boarded the Fortanach. It would take days to reach Station Fungboa, where the Fortanach would be outfitted to serve as a boutique cruise ship in space. Relax. Ronnie was never good at relaxing. Finding the freshly minted corpse didn't help. Now Ronnie was trapped on a spaceship entering the between. No communication outside the ship for three days.
Three days with a skeleton crew of strangers and one or more killers. Relax. Enjoy. Ronnie wasn't good at either. What to do? Ronnie could hide in her room with the door bolted until they arrived at the space station. Or, she could follow her compulsions and search out the killer, risking her own life. What would you do? Ronnie knew what she would do. And it made her mad enough to scream.