Let sleeping toddlers lie

Did the last two nights my toddler girl has been staying up late. Now she's in my bed asleep despite it being closer to eight than seven. Sleeping to this late hour is, for her quite unusual. I'm glad she's sleeping. Of course it does mean I can spend more quality time with my elementary aged first born, but I'm just glad she's sleeping. There's something extremely beautiful about a small sleeping child. Everything about the face says peace. Perfect peace. Every little movement her body makes, every wiggle in response to a sound, I hold my breath.
Truly, let sleeping toddlers lie.