"you nasty girl/you nasty you trashy/you classless girl/you sleazy/you freaky girl..."--Destiny's Child
If Jack the Ripper was, in fact, a woman, that would explain a whole lot. First, it would make understandable the precision with which each of the victims were murdered--women always set out to do something and get it done, no holds barred. Secondly, it would explain how she was never found out--women, if they absolutely have to, can keep a secret and/or lie until the end of time. Finally, the murderer killed five prostitutes without ever, um, "requesting their services"? To men, that's the equivalent of throwing out your favorite food because the sell by date is yesterday. Even in a puritanical nineteenth century London, that doesn't add up. You do the math.