On the other hand, as a fellow dog-owner Katy said yesterday, when Roxy runs away, it is her choice, but when I leave her at home, it is not.
Apart from an occasional paw at the door, Roxy leaves the door alone. I had reprimanded her on a couple occasions when I caught her scratching at the door, so that could be discouraging her. But she quickly settles down on the couch, which tells me that discouragement is not the case (I'd expect her to wait by the door, otherwise.) Finally, Roxy does seem to want to return to the crate, where her water and a beef tendon spiral are. I did leave some water in her food bowl outside the crate, so the lack of water is not an issue (she finds it and drinks out of it.) Next time, I will try leaving the crate open.