The Girl Unknown

You've noticed the girl on the train for a while. She's small and willowy, with an alluring face and beautiful eyes that seem to glow. She is almost angelic or otherworldly. You see her every day in the same exact seat, staring out the same window, and humming what seems to be different portions of the same long song. For a long time you watch her in silence. Eventually you work up the courage to sit alongside her and attempt conversation. She is warm, smiling, and engaging, but you sense distance buried deep within her. Finally, after three weeks of having small talk, curiosity get the best of you and you follow her. She always seems to disappear the second she gets off the train. Strangle instead of stopping at her normal station she stays in her seat. That day afternoon you discreetly follow as she rises from her seat, makes her way to the back of the car. She enters the restroom. When time passes and the train departs towards one of the last stops, you grow worried and knock on the restroom door. Finally you break in, but suddenly find yourself on the girl's seat in the train, staring out the window. You feel compelled to hum her hypnotizing song.