"Oh, that's out cue." Nadia finished the the powdering she had started just before, and only then took notice she had prepared more water and powder than was being used. A bit hastly, and while waiting for Rosa to respond, Nadia poured all powder over the water of the pitchers she had lie down here and there, then used each to water some dry looking plants at the back, gesturing the Ravenclaw to come along so they would be able to keep chatting.