It was also the universal reaction of anyone who had spent a prolonged period of time in the Doctor's company. Although Martha shared the look with Jenny, she was more worried than her demeanor suggested. He was hiding. That wasn't surprising. The Doctor had a habit of hiding from things that were too difficult to discuss. But hiding from medical treatment was something else entirely. Something she wouldn't accept.

"Doctor," she said, firmly, "I need to take a look."

His reticence had increased since Jenny's arrival, but she couldn't very well send her away. Even on some sort of errand. She had her father's stubborn streak.