The Angel, The Nubie and the Commode

In the middle of the night I heard a sound or series of sounds - right there in the bedroom - which I could not identify... Turning on the light, I saw Nubia tapping various surfaces of the antique commode that's opposite the foot of the bed. Huh? As she tapped, and I watched, the little door opened and out came... Angel! Strangest of all is that fact that inside the door are 2 shelves full of stuff - no room for an Angel as far as I can tell.