I don't think that this has been posted elsewhere on Mumsnet and perhaps a better board might have been True Crime or Politics but hardly anybody responds to them so I'm putting it here in good faith, as it were.
I've listened to about the first hour of it and I doubt that I will get much further but really!
She seems to be treating it like some kind of celebrity interview. We have to go through endless pointless details that don't really seem to fit with being questioned by what is essentially the police.
I suppose you could say that she's just a psychopath but I find it kind of compelling. Is she completely deluded? Half deluded/half knowing?
Other people on here have qualifications in psychology, are prison officers etc and are generally better equipped to comment so I'm just opening the floor...