"Very responsible, Doctor."

A smile. Like the flicker of a match in a deep black cave.

She left the hand on his cheek. He wanted it there. If nothing else, it would extinguish that little flicker of uncertainty. There wasn't much space between them, but a single pace - small, by both vampire and Time Lady standards - closed it even more. Inches but not feet. She'd never like metric.

"I'll do whatever I can to help you."