Read it through once

But on her returning to the drawing-room, when her letter was finished, she saw, to her infinite surprise, there was reason to fear that her mother had been too ingenious for her. On opening the door, she perceived her sister and Bingley standing together over the hearth, as if engaged in earnest conversation; and had this led to no suspicion, the faces of both, as they hastily turned round and moved away from each other, would have told it all. _Their_ situation was awkward enough; but _hers_ she thought was still worse. Not a syllable was uttered by either; and Elizabeth was on the point of going away again, when Bingley, who as well as the other had sat down, suddenly rose, and, whispering a few words to her sister, ran out of the room.