[After the influx of curious outsiders and participants has lessened, Sherlock will find himself in the company of one of his fellow teachers. She seems to hold only a cursory interest to the event in question... though with her, it's hard to know what she really thinks about it.]
I must confess I was surprised that you show so much interest in these students of yours. [Hers, too, of course, but obviously she doesn't think of herself as a teacher and even less of the people here as her students.]
But perhaps you are more attached to your role as a mentor than I realised.