This could not have been any more manic. (She would have said "if they tried", but they seemed to be trying pretty hard so that didn't really apply.)

Sinead's shield had held up for two hits before bowing out of the situation just as a large quantity of mac and cheese (seriously, who chose the food for this thing?) sailed majestically towards her. Out of the corner of her eye, she saw that Hirsch had been similarly taken unawares, but she was more concerned with her anger at the girl- a Ravenclaw who looked about 13 or 14- who had thrown the stuff. Food fight it may be, but she really hadn't expected to get covered in food. And while Sinead was politely throwing bits of bread, she got nailed by horrible cheesy sauce all over her clean robes? She couldn't take that lying down. This meant war.

She recast her shield with a vengeance, the "Fianto Duri!" rolling off her tongue so that she scarcely even noticed when it seemed to work properly this time. (Except she did notice because, well. Smug much? Even if it was still a bit- very- small, but she had time to work on that later.) Bread didn't really seem appropriate for getting revenge in this situation- something rather messier was called for. Her eyes strayed sideways to the table, falling upon a large bowl of chocolate fondue. This was no time to question why anyone would waste it here- snatching it off the table, she Wingardium Leviosa'd it (her throwing hand definitely didn't have good enough aim for this job) and sent it sailing towards her Ravenclaw assailant, just hoping that her shield wasn't as solid as it looked.