So if i read your post right, this nuc had been a split and the bees with a queen absconded when she hatched out. This queen you found today was left in the nuc. Chances are she's just fine. Try her in another split as soon as possible or put her into a small mating nuc to get with some brood and bees to take care of her. If she's good she'll fly out and mate up, come back and start laying within about 11 days.
