Yeah, Anita doesn't come off as poly so much as 'I fuck everyone and then the boytoys fuck each other for my entertainment. And have I mentioned that everyone who's resisted has either been metaphysically mindraped into submission or been sent to Room 101 therapy?'

I don't know about LKH, but given how Anita behaves, I can't imagine she's exactly the queen of polyamory.
'So lie down right here in the ritual circle while I spill a metaphysical date-rape drug all over you in order to enslave your mind and steal your powers...'
'...Wait, wasn't this a VILLAINOUS act in your first Merry Gentry book?'
'Oh, hush! Now my - er, Anita's - ARRRRDEUR will make it all lovey-dovey!'
'And that isn't metaphysical anything - it's just a jar of glitter powder mixed with... *squints* Is "Creamy Goodness" a brand of sour cream?'
'Will you shut up?! You're ruining the mood!'
'Yeah, let's just say this may be my first and last visit here...'