Breathing Space by Kristen Painter

Step into the enigmatic world of the Athos—a vessel that blends the luxury of a cruise ship, the intrigue of a scientific research station, and the might of a military starship. Here, amidst the stars, you’ll find Ellis McFadden, the ship’s head librarian, embarking on adventures she never anticipated this late in her career.
Even better that she gets to experience it all while in proximity to her daughter, who just happens to be the vice admiral. But life aboard the ship takes a darker turn when a library patron is found dead, and Ellis falls under suspicion.

With her reputation on the line, Ellis must navigate a labyrinth of secrets and lies. Armed with her wits, the loyalty of her eclectic friends, and her trusty android cat, she dives into a mystery that’s as thrilling as the unexplored galaxies around her. Can she find the critical evidence to clear her name before the next jump into the unknown?