caught 1 & caged her to install in another hive that had a queen 10 days ago but today she could not be found & there was no brood whatsoever in that hive. i'll give that hive some brood & eggs before i give them the new queen.
I wouldn't let that queen sit around too long. If she is not laying, her pheromone levels will be dropping and she will take more time to start laying again. If you have a good queen, why would you wait for the hive to start from eggs?