Severus watched the exchange between Hermione and Narcissa, and sat up slightly as he was shocked to see Narcissa conjure tea for the pair of themselves. He looked over to Minerva, his Gryffindor counterpart who had an equally surprised yet interested attitude about the exchange. It's been less than a week, and they seem to have fallen into some sort of domestic pattern. That she took the tea without checking it bode well for them, not to mention her dry humor. Of course Narcissa wouldn't poison her in front of so many witnesses.