You are in the library, it is your first time here. You managed to find the book you were looking for, something you need to read for one of your classes. You take a seat, read for a while, after a particular turn of the page that makes a noise, you hear a hostile 'Shhh!' behind you, alarmingly close.
Had watched the new student from the moment they walked in, following quietly behind, she knew a trouble maker when she saw it and besides, this one was cute and she was already formulating perverse plans for them. Standing behind them, her finger raised to her lips, having just shushed them, she stared back with a fierce gaze that dared them to say something, knowing whatever it would be was certain to be more than enough of an excuse for her to escalate her special brand of punishment.