Dark Space Secrets

Having served a brief term in the military gave Kina the start for her training as a better-than-average pilot of large spaceships. Using that training to give her a jump in her career, she lands a job in one of the system's best passenger and freight companies. It doesn't take her long to move up to one of the supreme spots as captain of the best passenger liners going from the busy civilized worlds.
Kina and her crew thought she had it made until a stalker began to show up wherever her ship was docked. Because that put her crew and passengers in danger, the company moved her over to a different division hauling freight. But nothing could catch or halt the large mysterious figure who was ruining her life.  What was worse, he began to put thoughts in her mind that there might be a better life for her out in dark space-one where her life wasn't run by the rules of a corporation but where she might be free on her ship.
What was the secret this stalker knew that she needed to discover?