[The age disparity between her and the rest of her world still unsettles her, so hearing her brothers whip out the little sister every so often is nowhere near as annoying as it used to be. It comforts her, actually, lets her know that they still see her as the same. So she grins at him.]

Yeah, I know, how could I forget? [She pauses, looking thoughtful.] Right, us actually doing something at all would be surprise enough. Maybe food would be the way to go.