Harry tilted his head and approached, noting her body language. She seemed...well, not all right, to him. "You sure? I mean, you look as though you've got something bothering you." It was the best way he could think to put it. He didn't know if something was physically wrong, or if it was, like a number of people, related to these nightmares, but it was pretty clear to him she wasn't as all right as she was pretending to be.
It was probably rude to pry, but Harry had gotten in the habit, quite young, of asking questions he probably shouldn't and expecting answers. "I should know. I've seen that same expression on my own face in the mirror the last two days."