First I want to thank everyone for their suggestions.
Now for a report of what has happened. Last week when I looked at the hive, I saw no brood, no eggs, no queen cells. I thought the hive was in real trouble. On Saturday I inspected the hive again. While looking at the girls I saw what I thought was a queen, but not the marked queen I had installed with the nuc. She was being ignored by the other bees, so I wasn't sure if she was really the queen. Again, I didn't see any brood or eggs. I moved the outside 4 frames that had not be worked at all to the center and closed the hive.
On Monday, a local beekeeper with more experience than me came and we inspected the hive again. The 4 frames I moved to the center were completely drawn and mostly filled with uncapped honey (in just two days, amazing.) We didn't find the queen, but we were able to see eggs in many cells. The eggs were single and in the bottom center of each cell. The bees were very calm when we were in the hive.
When talking with other beekeepers, they said the reason the queen was unattended when I saw her on Saturday, was that she was still a virgin queen.
I am just astaunded with how much work these girls can do in such little time.