Cameron disliked the idea that he had been there for a while without her. It wasn't that she thought John incapable of protecting himself, he had proven he could time and time again. But still her mission, her entire reason for being, was to protect him. To guard him. To be a confident when it seemed like the rest of the world was against him.
He had followed her chip. He had followed her. She was reminded again as she saw his eyes dart up to the side of her head. John knew how they worked better than anyone. Even if when he looked at her she knew he saw the pretty girl that everyone else did, when push came to shove he knew that everything she was, everything she felt in her own way of feeling was that chip. It was the machine version of a soul. If one bought into that general theory.
"And it's really you," she replied. "How long have you been here?"