I think Joe would try to find her, if only to keep the remaining awake characters together.  Of course, after seeing the situation she's in, I'm debating how he'd react.  I know for one thing, he'd attempt to stay away from the creature, so no melee attacks, but he wouldn't want to shoot her either.<br/><br/>Besides, he has no means of helping the others right now, so I can't really see him standing around.