Where it falls down for me is that it is proposed that the killer requested sex from the women because most were murdered on their backs.
A) Would a woman of who desires sex from another woman be the instigator of the sexual act?
B) Surely it was an unusual arrangement?
B) The poor victims were tough streetwise women whilst the proposed woman murderer was a wealthy lady of a different class.
C) It is assumed that because the proposed killer could not bare children, she was distraught and losing her mind. Was there any evidence of this? She may well have accepted her predicament and got on with life.
Thought provoking book though! And I do believe Mary Kelly was the intended victim all along.