Is empty tub syndrome like empty nest syndrome? But more soggy?

So the other day Claire stayed at her friend's house for a sleepover. Her first ever. (I didn't think sleepovers started this early but this is a close friend) I was a little disturbed to have only one little one to chase, but she had no such hangups, no desire to talk to me on the phone to say goodnight, and was far more interested in hanging up and getting back to play, and so she did. No calls in the middle of the night, just a very tired preschooler the next day.

Hannah had her first bath alone since the days she was so small she was bathed in the sink.

She liked playing with Claire's bathtub Ariel Barbie, and said "Ariel" - thus proving she wants another Disney vacation. And when we said show us your bright clean teeth, she did this: