Dear amy&jasper:
My maid had same problem with your maid.
Actually,I didn't set up when does she go to sleep. I just need her to finish her job for the day. Normally,she go to sleep at arround 2330(sometime eariler and sometime later),and must wake up at 0700am. For the day,my daugther no need to school,I allow her wake up at 0800am. But rightnow,I think that is not good for maid. Because they will change much lazy.
If I change the other maid later, I will ask her wake up at 0700am everyday,nomatter is my daughter hoilday or not.