I may be crucified for this, but I think it needs to be said.
I think, over the past few weeks, the Anthony's have come out of their denial quite a bit. Doesn't change the front they play in public, one of support for their daughter, but in private--I think the dynamics may be a bit different than what some of us are assuming.
I seriously DOUBT they are pampering and catering to her in there. In fact, from my own personal experience with a "tough love" mom, I'm sure she is probably being ignored, unless they feel she has something helpful to add. I'm sure the temp in there is frosty, and Casey is feeling completely victimized in there, as she should. I can easily see them pretending she didn't exist, except to ask where Caylee was. If she starts to give her same spews of lies, I can easily see them turning away, not wanting to hear it.
They are a dysfunctional family, yes. They all have distorted truth, yes.
But do I think they have reached a point where the parents, at least, know? Yes. Absolutely.
Again, I don't think this will change their game faces a bit, but I'm positive Casey is not enjoying "friends and family and pizza". I think being in that house, for her, is the worst sentence she could get right now.