Not finding a queen is a pretty comon thing with new beeks, I hardly ever find a queen unless by accident. If they have brand new foundation , they can take a bit longer to start to take off. They need to pull that wax first. Give it a bit more, there's no real rush , you can always order a new queen. And get them up and running pretty quick. I thnk its rare when a queen actually doesn't make it, or leaves.