The girl is the blind co passenger of the narrator who boarded the train from Ruhana and accompanied him till Saharanpur.
The girl got up from her seat when the engines whistle shrieked and the carriage will change Their Sound and rhythm. The girl got up to collect her things since the train was approaching Saharanpur Station, her destination.
The speaker Thor that he would cherish the brief encounter for the rest of the journey and even for a while after that. He grew a font of the girl with in such a short span of time that he was ready to sit in the train for almost any length of time, just to hear the girl talking. He anticipated that the girl would forget their short, Chance meeting as soon as she gets down at Saharanpur for she expressed relief at the journey being not a long one. She also remarked that she did not prefer to sit in a train for more than two or three hours. It is evident that the encounter bore different meaning to the two of them.