She walked mindlessly around trying not to make a sound so that she didn’t attract Filch’s attention. She couldn’t shake the image of Ron and Lavender from her mind and it was infuriating. How could he do it to her when he must have known how much he was hurting her? She was determined not to let it torment her like that anymore, though, for all she cared Lavender could suck Ron’s brains out through his mouth (which she probably already had done, judging by his behaviour). Her heart, however, didn’t seem to register her determination.