The Doctor was looking at her. He just shrugged "Mmmmm" He noticed that she was picking up on something "What ?" He seemed confused. He wasn't sure what had caught her attention, he was following her.
"Who shouldn't"
He was looking around. He looked at the person she had her eyes on.

"Ah what?" He had no idea. He seemed to be thinking. He wondered what she was trying to figure out. He seemed to be thinking as well. The time lord walked on. He hated not knowing what was going on.