I agree that at this age it is about rest and not necessarily sleep - mom is finding that at home. She needs to be on her mat but with a small dish of things to do or even better she must lay for a period of time and then you will come to get her after all of the others have fallen asleep and allow her to do something from her bin of quiet things you have set up - feltboard or magnet board play is great because it is quiet and you can allow a lot of little pieces during naptime. On the days she falls asleep then she needs it. But make it clear to mom and child that it is NOT your job to entertain the child during rest time as it is your rest time from daycare duties too.