The Sleepover...

It was the triple threat sleepover.  I think with just two, they burn out relatively quickly. Not by any means to normal times.  Three however, they just bounce off each other, a self perpetuating awake state.

I thought seeing the tent up in her room was probably the easiest way to contain them and it worked out fun.

I gave up around 1AM, they went quietish a bit later by my reckoning. Next morning doesn't seem to be displaying sleep deprivation but I think it's certainly normal bed times tonight.