Him describing her as attractive takes her a little aback. They're not the same person..not really...but it's still a little strange to have him call her attractive. Not that she hasn't noticed how attractive he is as well.

She smiles, dropping her eyes. "That's...really sweet of you to..."

Then what he said first registers, and she looks up again, brow furrowed. "Wait...you said Moriarty is a 'he?' He's a man in your world?"