But, shhh... they're taking a nap.
Once Hannah started pretending, at around 18 months old, she hasn't stopped - sometimes for days at a time. She would bounce from pretend to pretend and we were expected to keep up. If she looked up from a bowl of water that I'd just put down for the 'puppy' and I said something to the 'puppy' but she was now a horse, that could be very bad.
Now that she's older and her pretending has gotten more sophisticated, her sister's starting to pretend independently from her. This means that while sometimes she's Boots to Hannah's Dora, she's more often somebody or something completely different than Hannah is, which means that I have to pretend two completely unrelated storylines at the same time. It can be challenging, but so much fun.