You have to watch every second

Lily was playing with the tupperware today and since she was playing so nicely on the floor in front of the cabinet I thought maybe I had a second to check my email using my laptop. Well, things got very quiet, no more banging lids on the floor, so I looked over and Lily was gone. I FREAKED! I instantly checked to see if the door to the studio (not childproof and has a concrete step) was closed, it was, and I was standing at the other entrance to the kitchen. ?????? Guess where Lily went?