When the Nostromo decides to act on what they believe to be a
link distress signal, a portion of the crew departs for
link this nearby moon. Ripley stays back on the ship and communicates with her crew mates
link over the radio. In a scene where she is asking her shipmates to further investigate the nature of the call they've received (what would later be determined not to be a distress signal, but a warning), you can see her standing drinking a cup of coffee with her Casio F-100 in view.