With new queens, being mated, laying eggs and having open brood are all different.
If she was just mated, first, you have no indication that she was mated, no eggs. Newly mated queens are hard to spot and tell f they are mated. More importantly she still hasn?t proven herself and could bee killed by the bees.
If she just has eggs, she still hasn?t proven herself and eggs can bee hard to spot, especially by newbees.
Once she has a large brood area of wet larvae the bees tend to bee less disturbed by your intrusions.
Jim Altmiller