For that matter, I didn't see Rosa, either. Dolores was with Morrison, and Mal, J.B. and Meier had their g.f.'s within reach, but no Gokk and no Rosa.
Maybe Gokk was hiding in the plane.... I noticed the cabin hatch was closed, and the windows are suddenly opaque (compare page 598 to pages 605, 606 and 607). Also, when did they drive Wild Bill's Cord out there?
There's obviously quite a bit going on off-camera, as it were.