Hermione started protesting the moment Ron started pulling her chair away from her desk and gave a glare at Harry when he plucked her quill out of her hand. Really, she had tons of work to do and said just that. "I have a lot of work to do, I can't just run off for an hour; I can eat lunch here," she protested, even as Harry's final musings about her having not broken the rules in years left her with a faint blush on her cheeks.
She quickly glanced at Ron, trying to discern if he had actually told him about what they had done, but she wasn't able to tell whether he had or hadn't. Recovering quickly, she cleared her throat and finally stood. "Exactly how many rules can you break while getting lunch?" she asked, reaching for her handbag. "Unless, of curse, you plan on not paying for your meal and leaving an awful mess behind."