I wouldn't be too concerned then. Obviously she gets plenty of nutrition! I know how you feel it can be scary I have a hen who is doing the same thing she is out all the time eats plenty and doesn't lay.
Does it feel like she has a egg does she feel big underneath? If it feels normal meaning not big or feeling like something is in their just give her some time. I had this happen a couple times just make sure she gets outside a lot and has bugs to eat