This article accompanies the fable
Throughout 1881 and 1882, Pappenheim, who was in her early twenties, indulged in an act of reverse striptease with her physician Josef Breuer, adding layers ("reminiscences"). Breuer saw it in reverse of course. With Freud's help he described her case in Studies on Hysteria (1895), wherein they advanced the idea that through unburdening herself of her traumatic memories, especially the loss of her father, Anna O. had been able to achieve catharsis.
These days it's possible to advance the opposite theory, which accounts for Breuer's suddenly dropping her as a patient when she famously declared she was having his baby. It may have been one story too many.