Molly can tell that he's feel rather proud of himself at using the word and she wonders if it'll be one of those things that once you say it once it makes saying it again easier. Or if he'll go back to pretending not to know the word at all.

She nods along to what Dr. Henry is saying and then her eyes get big at the piles of boxes that await them.

"Wow. This is....a lot of stuff."

And she can't believe they're just going to let her and Sherlock go to town in here. She smiles at him. There's got to be at least one brain in all of that.