There is a pause in which Eponine takes in the man's appearance: the paper, the book, and his focus on the building before he was interrupted by walking into her makes him seem a curious fellow. Perhaps he is a student or a lawyer like Marius. He seems to be around the same age, but Eponine is hardly the best judge of age.

"Don't you fret, Monsieur. It was my fault, because I was not looking where I was going." She tilts her head to one side, still looking at the paper and the book he carries, but she answers his question with a nod. "I am just fine." Confused, and lost, and definitely a bit disoriented, perhaps, but otherwise, she believes she is fine.