Everyone has a period of youth that is lost like water.
Sue thought: She wants to thank. Thank you for being able to walk on the street without any worries. When you are tired, you can just find a food stall to rest for a while and have something to eat. Thank you for once being among the crowd waiting at the red light, snickering and counting the cars behind the stop line in inverse proportion to the seconds at the red light. Thanks to the people she met during her youthful period who taught her how to grow.
Sometimes, a moment of sight can last forever. Sometimes, missing it is forever.