You know, you might be onto something here.
It's really easy to look at all of this through the lens of insanity that is Chantal. She's infectious. And I'm not going to defend Nader or insist there's no possibility that Deedee isn't just a pootoucher, but there could be something to this.
If -- IF -- in fact they have known each other for a decade or more, then yeah. Your friend, who got out of jail not too long before meeting a nutcase who's clearly dragging him down and (re)introducing drugs back into his life, needs your help. You go visit a few times, see he's in bad shape, and offer him a place to stay and help finding a job in another city. A fresh start. This especially makes sense if Deedee is a recovering addict herself.
I don't know if this is true, but this is feasible at least. Sometimes I think this thread loses sight of the fact that not everyone on earth is as shitty as Chantal. I mean, we can be realistic without being naive. And again, I'm not saying this is what's happening but it's at least as likely as Deedee being certifiable enough to associate with Nader purely to pwn Chantal somehow.
Just like Nader isn't an angel by any stretch, but he's not the abusive monster Chantal would have us believe he is, and how Shannon might be pretty low trash but is at least functional enough to hold down a job and raise a family, I'm going to assume Deedee isn't a complete psycho until I see evidence to the contrary.