I've considered this in the past, but I think the answer is more simply that she's just really, really, really stupid, and like most stupid people she's too stupid to realise how stupid she actually is.
Her schizo ramblings remind me of the Geocities websites you used to stumble across on the early Internet that would grant you a glimpse into a person's extremely specific interest, and that's what should really scare people. There are probably thousands of Jackies out there ranting at the (Joshua Conner) moon 24/7, who simply haven't managed to make a public spectacle of themselves yet.