Eek, that sounds like a very high maintenance child with parents who need some parenting classes. Good luck to you with this one Jennifer. I would tell the parents that I could run a fan for the white noise for the child but she must learn that our quiet/nap time is not negotiable and we can only do so much to soothe a child before they go to sleep but then we need our break too. Sometimes it takes weeks before a child learns that naptime means staying in the playpen or bed for the entire 2 hours and it's exhausting for everyone during the transition period.