Still hidden from the potions professor, she realized that he missed their conversation and re-adjusting her plan, she cast the same glamour back on herself. The momentary shock from the redhead was all it took for Hermione to cast a wandless non-verbal confundus on her former friend. She watched with trepidation as the professor came closer and into her view, she hardly had to ACT nervous with the already foiled plan that could lead her getting caught, had her on-guard against Snape. He was by far the smartest of all playing both sides and still alive amidst the chessboard set by Dumbledork and the Noseless-freak.