The quail won't stay at the nest long. The hen will sit on them untill they have all hatched and dried. Then they will be off hunting for food. You may see the family running around your yard.
Sounds like she hasn't started setting yet, if shes still laying eggs. You will see her there most of the time when she does. Then you start counting down the 23 days.
It's nice that your waiting and letting her hatch her babies