Ok...back to the fingernails.....if there were red polished nails on the floor found by the cops.....then how did they miss the unpolished ones? And....how did they get red.....someone would have had to polish them at some point. The only explanation is....she took them off to put new ones on then she would have had to paint them....OR...she had the red nails in her purse to glue back on after they had fallen off.
I wear nail polish all the time and the likelihood of it coming off on a railing if I fell...is slim. There might be very small chips but not a smear or glob unless it was recently polished and not totally dry.....