OK, I'm really at a loss as to what to do. The kids downstairs settled 15 mins after she left and I spoke to them. The problem napper is screaming "nah nah nah poo poo" and smashing her crib on the floor somehow. I sat in the room for 15 mins and read (didn't even look at her) and she was a bit better but not much. She keeps upping the ante so I have to engage with her (tell her to stop banging/screaming). I would take a crying/screaming transitioning baby over this behaviour to be honest. Do I ignore, redirect? What kind of consequence do I put in place after nap time to teach her this isn't acceptable. Normally I just leave kids for nap time for example if they are crying but I haven't experienced anything like this.