question is... Is it possible that she will build and ovulate and just slug out because he has not even attempted to breed her? Or will they generally not lay at all if not bred by a male?
slug out no, absorb follicles, yes...

The season just started, relax and enjoy the ride, many people are pairing without lock ups yet, and maybe the timing of him entering just isn't working for her.
Next time she sheds make sure he is ready to go in with her