Merrie Haskell said this quote

The other good thing was that I had enough rank to strong-arm Marjit into confessing that she'd been the one who'd told everything to Pa about my first invisibility cap, which was how Pa knew to come steal it. Unfortunately, since my rank in the surface world hung off Pa's, I did NOT have enough rank to take him to task for stealing my cap. So I just put him to sleep during a fancy dinner, so that he went facedown into the sour soup. Just the once. It eased my ire terrifically.