The Doctor isn't really paying full attention either. He's somewhere in his own thoughts, replaying the evening over in his mind. It's why he doesn't see her as she steps against him, and why for a moment he doesn't know if it's him or her that knocked into who.

"No no that's--" he starts, but stops, concern finding its way into his eyes. She looks uneasy, he thinks, and so his question comes naturally. "Are you alright?"