There was no doubt in Romilda's mind that Constantine could hurt her badly if he wanted to and she felt her heart start to pound in her chest. Of course she was scared, but she wasn't about to show it in front of him. Totally convinced that Rivers was the biggest idiot in the school, Romilda didn't put it past him to hurt her.
"Ugh, what is wrong with you? I never said I was better than you. I've barely ever spoken to you before! But now you think I purposefully knocked you over. Honest to Merlin, if you were me you'd want to hex you too. Like I have any idea what you could do to me out here." Romilda dropped her wand, but didn't relax her hold on it.