Do Good queens just leave the hive or what?

My queen emerged and began laying 18 days later and filled the whole hive with brood, I when I say filled I MEAN FILLED it. There was rarely 1 or 2 open cells uncapped. I was happy.

Now 3 weeks later the hive is very strong, I checked for eggs, larva and brood, NONE except for a few capped cells left. The hive did not swarm, I watch them carefully, This is the 3rd time this happened this season.

Also the bees were very mean about 50 stings on my gloves and as I walked away they followed me for about 100 feet. Sorry for the length, I just can't figure it out. Thanks