You can tell that she hasn’t been asleep. It seems like she’d actually been awake for some time now. You also realize that yesterday when she refused your sandwiches, she seemed embarrassed. And as you saw last night in her cellar, all she really had for food was that chopped up animal carcass. If you had to guess, she was completely unprepared for visitors yesterday and feels some level of shame that she wasn’t really able to host you all properly, offering no food or drink, just shelter. Wherever she went likely had something to do with that. You may notice she seemed to have a slight bulge in her dress, likely hiding something she went to get last night.
You can thus deduct that she does t have any particular hostile motives, she simply wants to make up for being an unpleasant host yesterday. However it still begs to question where she went and how, which your insight alone wouldn’t be able to figure out beyond theories.