Kelly was a scientist… well she worked at a lab… well… ok she was a janitor at a lab. Going unseen is part of the job. One day there was an accident at the lab. A light refraction compound they were testing leaked and kelly was too busy listening to her music while working to hear the alert. No one even noticed that she was even affected. No one ever notices her… now so even more as her body is completely transparent, making her all but invisible except in the right lighting conditions. She’s taken to her new reality quite well though all things considered.