Tokusatsu said: The fact that he's acknowledging her because he remembers giving her his autograph?
I think he just knows how to make his fans happy. I mean last time, he put up a very good front for her just to make her happy when he really needed to go.
So if he remembers her as the girl who got his autograph ... I'm guessing her blue-and-white coat and scarf are licensed merchandise rather than the real thing.