Putting my tin hat back on for a moment given the above statement.. Why would Papa Raith send an infected "insane" Justine to be the lover of Thomas? For starters while he may not be star born or a wizard, Thomas might also have some protection from Outsiders from his mother. Why would sex with Thomas "drain off enough emotions" to keep her insanity in check, or even cure it?
Ultimately to control Thomas, which eventually Justine did when for her sake and the sake of "their child," Thomas became an assassin. Took a few years, but White Court Vamps live a long time, Outsiders live forever, they play a long game of very complicated three dimensional chess.. Then again, so does Mab.. Yet even she didn't see or predict that Justine was infested.
We have no solid understanding of Nemfection; just a few Harry-POV snippets, and we know that Harry is (a) an unreliable narrator; (b) really unsophisticated -- even simplistic -- compared to the Big Powers.
Is being Nemfected something like being a Denarian? Does Nemesis implant a "shadow" of itself, who cajoles/seduces/coerces the victim until they choose to accept a full-on Nemfection? We do know that Nemesis can have multiple agents, but not
how many agents. Maybe the multiplicity of agents comes via having multiple independent "shadows." Or maybe "Nemfection" is an all-or-nothing state: either Nemesis is within you (though not necessarily fully in control of you) or it's not.
None of which really explains whether these multiple agents can communicate (outside of normal mundane channels) and/or collaborate. Are they limited to mortal methods? Can they use magic to talk? Are they all just sockpuppets of one central identity, who can use them like fingers of a single hand?
Papa-Raith may have been Nemfected himself, or carrying a Shadow. He may have made a deal to send a
specific doe to Thomas, without understanding the ramifications. Or a Nemfected (and actually rather powerful) Justine may have managed things on her own, without need for any assistance at all.
Why would sex with Thomas "drain off enough emotions" to keep her insanity in check, or even cure it?
Multiple kinds of "insanity" are simply one form or another of emotional disregulation; whamp-sex likely settles this sort of thing right down, imposing its own emotional steady-state of fixed adoration & hormone-driven relaxation.
