[Hermione’s teeth] had now grown down past her collar. Pansy Parkinson and the other Slytherin girls were doubled up with silent giggles, pointing at Hermione from behind Snape’s back.
Snape looked coldly at Hermione, then said, “I see no difference.”
Hermione let out a whimper; her eyes filled with tears, she turned on her heel and ran, ran all the way up the corridor and out of sight.
And just as a reminder, Hermione is 14 years old here.