The Doctor's not entirely sure whether to be pleased or worried at her enthusiasm, but he adopts a slightly stern look.

"Now now, miss Pollard," he says. "Our priorities here is to get everyone home to their own universes safely. You don't want to go inciting anything. There's a lot of powerful people in this city, and a lot of collateral damage to be had. Besides, we're stuck here, remember? You don't want to get yourself a reputation as a trouble-maker."

And if Charley imagined that that's exactly what the Doctor's been doing, she wouldn't be mistaken either. But there are still a lot of factors to be considered, and she doesn't want Charley to get hurt, either.