Did you really think she was going to give you a better answer than Laharl? He shouldn't have to worry (of course, if the situation were reversed and he was hiding the truth from her, he would have been in a lot of trouble).

So in the process of trying to tell him that she was fine, she started to cough again, which dissolved into a strange chuckle. Well alright. No completely hiding it. "I'll manage," she said at last.