She isn't trying to game him, which is precisely the reason why he doesn't witness that moment when she realises she'd spoken with Alan on her first day. She gains nothing from letting him see her work it out, so she doesn't show it. Nothing personal, Shore.

She smiles when he asks his question, grateful for the deflection from serious topics, even if she's more than capable of holding her own on that front. "The pie's delicious. Worth whatever bad karma I may have earned myself by coming over here and making conversation while people are trying to watch an American Christmas staple." Not that she believes in karma. It's probably a fairly safe bet that lawyers and the people who happily work for them don't much care about their karmic status. (Your mileage may vary?)