"Thank you!" If she had been bolder, she would have thrown her arms around him in exuberance. As it was, she leaped to her feet, excited energy suddenly chasing the weariness of her long day away. Still beaming, she bent politely at the waist, reiterating, "Thank you so much."
Then her common sense started to return and she said, more subdued, "Well, I suppose you must be tired. I will see you come sunrise?" She meant to say it as a statement, but somehow it came out as more of a question.