"Even at seventeen, Dolores was judgemental, prejudiced and sadistic, although her conscientious attitude, her saccharine manner towards her superiors, and the ruthlessness and stealth with which she took credit for other people's work soon gained her advancement."
She saw through the girl's saccharine smile and knew that his newfound partner was up to no good. However, it was not her right to meddle in their business. After all, she was only a friend.