I had no clue eggs were even present all of a sudden babies were everywhere throughout a 2 week period we saw nothing from the mother.
This is not uncommon, especially if they brood right away since being reclusive in the initial month is normal. Brooding and about to brood is more detectable if they have been with you awhile. Normal clues are collecting small shells, trying out new dens and eating twice as much as they have been. Unfortunately, most new keepers get excited about the hearty appetite and increased activity. I think part of the reason we often see newly introduce females brood soon after introduction is the increased appetite so they are out more often and easily caught.