So long as there were enough bees in your nuc, they are likely to be fine.
Keep an eye on the bee numbers and food until a good QC is capped, the leave them alone until she's likely to be mated.
Leave it alone. Probably supercedure, thought there's no way to be sure that it's not a swarm cell.
Safest thing is to leave the bees to get on with it.
I do the same and quite often split the patent colony into nucs with one QC each at the same time.
I leave the new nucs on the site of the parent colony.
Works very well as long as you ensure that there's enough bees in each nuc.