Nursery still allowing child to nap when we’ve asked them not to

We’ve been trying to transition to no naps for ages now, my little girl is mostly good without a nap now. She does get tired early in the evening and so we do early bed time, but if she naps then she’s awake till about 10PM. I have repeatedly told the nursery not to allow her to nap (unless she seems sick or absolutely exhausted), but we’ve been having days where they haven’t recorded any naps in the day but then she goes down at 10PM instead of our usual bed time at 7:30. The only explanation I have is that they’ve been allowing her to nap and then lied about it when we’ve asked/on the app. I believe there is only 1 other child in the class that doesn’t nap so it feels to me like they just try to get them all down as much as possible regardless of what the parents ask. I’m not sure what to do, am I being too lenient by allowing them some nap leeway (eg by saying she can nap if she’s not well or too exhausted)? Should I allow the nap time as I can see that nursery can be quite tiring for them? I have no proof other than the fact we are up till 10PM on random nursery nights. It happens about once a week, and she’s only in the nursery for 2.5 days a week. Anyone else experience something similar?