"Well, we're all made up of minerals," he said plainly. "Don't you worry about how time is passing, we'll figure out a way to get you all back to wherever and whenever this place snatched you from," which sounded much more simple than it actually was. Paralel worlds were supposed to be sealed off. The Doctor's mind ran circles. Whatever was going on now had something to do with the cloisters ringing. It had to.
"I didn't say I don't have one," Tonks, as innocent as her probing was, managed to make the Doctor somehow feel a bit defensive. She was weasiling in on him - and while it was her being friendly, to the Doctor it somehow made him squeamish.
"You're right there!" He said enthusiastically, his trailing steps leading him up the church steps and peeking through the glass.