Queen of Roses — Elizabeth McCoy

Sarafina was content to be an accountant, insulated from the public as she kept the numbers behaving and played chess with her fellows. But when the First Daris Bank is bought out, her indenture is sold to a cruise ship and Sarafina is thrust into a job she was never meant for. Now she's dealing with a motley crew, drunkard captain, flirtatious first officer, fire-sale equipment, and worst of all . . . Passengers.

Queen of Roses is a full-length science fiction novel, suitable for mid-teens and up.