Some time later Tej arrived in my doorway. She was obviously a bit miffed about something. I questioned her. She replied with something like, "I cleaned up the entire mess all by myself. Ari didn't help at all." Hm. I offered my sympathy for the way that had worked out for her and then a praise for her completing the job. A few especially quiet moments went by as she reflected. I knew those moments were especially quiet because while Mateja was rethinking her mopping skills, I was listening for little-miss-I-got-out-of-helping-my-big-sister-again. She's not the quietest child, unless... well... you know. Finally, I asked the question: Where's your sister? And her response: "OK. Well, she didn't want me to tell you, but... (a deliberate pause) she's stuck on top of the refrigerator!"
I let her stay up there.
(she figured out how to get down shortly after Mateja ratted her out)