"You're welcome." She's nothing if not helpful. He's not required to eat all of the food she brought, which should be obvious when she cuts herself a piece of the bread and begins munching on it. No, he's only required to eat something to fulfill his obligation to her. Rather unceremoniously, she takes a seat on the edge of the table. Is she trying to get a height advantage? (Yes. Yes she is.)

"Did the time help you get somewhere in your research?" she asks between bites. There appear to be more notes on all of the papers than when she left and he's quite a few pages further into the rather large book he had his nose in. She grabs one of the plums and begins to eat it as soon as the bread is finished. He may not be that hungry, but after a two hour walk about, she most certainly is.