Upon seeing light reflected on the ceiling.

She sees the light on the ceiling. "Whazzat?"
Mommy: "It's light. It's a reflection."
Girl V: "Hi flesshun! ...What are you doing flesshun? (Want to) play in-a Jump-o-lene? Come here!"
Mommy rotates the mirror causing the reflection, showing her that the reflection moves too.
Girl V: "Where are you going flesshun? Come back! It's going away! There it is!"
Girl V gets distracted by the mirror for a minute. Looks in her mouth, makes funny faces. Time to play with Eeyore.