Hi Guenter, thank you for your rich comment.
She, kind of incredulous but pleased, looked for my shots - where two - it's very exciting to shot in this circumstance. I felt irresistible wishes to shot her and she understood and consented to my desire.
So we don`t know if she`s looking at the route map of the stations or to you and your cam ( I notice the Canon Powershot G 7!) - it`s a great subway shot though! :-)