shanks suggests: dear ol Lumpore ... got the reference himself from H Rider Haggard's classic late 19th century novel She, in which the 'she' in the title was short for She-who-must-be-obeyed, which is what her subjects called her.

And he may well have gotten it from the same source as Professor Gay Robins (http://www2.cc.emory.edu/HART/directory.htm#robins) who claims that it was a title of The Women of the Palace, i.e., the Pharaoh's Mother and his Principal Wife (http://www.per-sekhmet.org/perankh/royal_wmn.html).