An instant smile is cheap evidence. People smile because they are polite, because the room expects it, because they did not hear the whole sentence.

The late smile is the one that gets him. He looks, catches himself, says something normal. She waits just long enough that the smile seems aimed at the thought he tried to hide, not the words he managed to say out loud.

It is small. Almost nice. That makes it worse. She does not call him out or make him feel stupid. She just smiles like she saw the draft before he deleted it.