"Quiet, Miss Granger." He straightened and stared down at her judgmentally. "You will hold your tongue and not speak until I dismiss you. What you and Mr Malfoy are doing is beyond foolish and puts both of you in more danger than you can possibly comprehend. There were muggle-born witches before you who were too close to wizards they shouldn’t have associated with and I will not stand by and watch that same fate befall you. I’ve spent far too much time brewing those blasted potions for you, just so you can throw yourself headfirst into danger."