I was making dinner when Steve called out from the living room, "how long should I let her sleep?" This is what I saw when I walked around the corner.
Sophia had asked Steve to sit on the floor and watch TV just ten minutes before. Apparently she was a little sleepy. She slept until 9 (I may have joined her for part of it) which made bedtime exciting. It's 11:19 and she is still awake and calling out to us!