Harry tries to make her stop

“Hermione, stop!” Harry’s words freeze the slutty girl in place, fingers stuffed deep - but not quite deep enough - in her quivering snatch. She wobbles, struggling to obey Harry’s command as her bodily urges betray her. A dribble of girl-cum oozes out of her slit and slides down her crotch to seep between her cheeks. It tickles, but she stills her twitching legs and toughs it out.

When even the Gryffindors start jeering insults, Harry tells her, “Don’t listen to them, Hermione.” He still hasn’t realized Hermione’s predicament, but suddenly only Harry has control over her. The other voices are drowned out and ignored, Hermione’s attention solely on her friend. Well, that and her soaking fingers digging into the side of her vagina.

A moan squeaks out of Hermione’s stiff throat, and Harry seems to recognize that she’s listening to him. “Let’s get out of here!” He shouts, grabbing her free hand and helping her off the table. Abruptly freed from her immobilization, Hermione follows Harry, but keeps her hand stuck in her cunt as they run, furiously rubbing herself to try and force out her denied orgasm. As she runs with him through the halls, she’s repeatedly forced to abandon her sexual efforts to sprint and keep up with her friend.