Minerva watches the scene on the balcony as her staircase glides down past it. Rose Weasley and Scorpius Malfoy are exchanging words with the intensity of duellists hurling spells at each other, regardless of anyone else, including passing Headmistresses. This particular argument might have started today at Arithmancy, where both are vying to top the class according to Septima Vector, or indeed over breakfast, but these two have been bickering since they laid eyes on each other as First Years, and Minerva is long enough in the tooth to know where this is headed, whatever their parents make of it.