 Why doesn't Trella tell Quest about her mission?
Trella feared she was in for trouble even before Motwick's head dropped forward on his arms in a drunken stupor. Perhaps she could call one of Motwick's friends; she had no one on Ganymede she could call a real friend herself. Trella swung with her whole body, and slapped him so hard he nearly fell from his chair. The dark man moved in on Trella again as Kregg overtook his quarry and swung a huge fist like a sledgehammer. Exactly what happened, Trella wasn't sure. The dark man, who had grabbed Trella's arm, released her and ran for the door. Trella ran to the unconscious Motwick's side. He followed Trella out the door of the Golden Satellite and fell in step beside her.
 Trella's employer wants the mission kept confidential.
 Trella is afraid Quest won't love her if he finds out about her mission.  Trella is worried Quest will take his father's papers and leave her.  Trella was told specifically to stay away from Quest.  Trella's employer wants the mission kept confidential.