I really think the big secret kept in that family for many years was they had a sociopath for a daughter. Imo, Cindy especially knew what Casey was/is and in order to both protect her own self image and her daughter's she enabled her continously. However most families that have to endure one will look for ways to appease the sociopath so that some semblance of peace can be felt inside the home.
I don't see George as one who tried to help Casey in the trial. He, unlike Cindy was not willing to fall on his sword for his sociopathic daughter but oh boy, Cindy sure was and did so. Maybe Cindy feels responsibility in nourishing the psychopathic traitts in her daughter. Or maybe Cindy sees a lot of herself in Casey. Even if Casey decides that Cindy has some use to her in the future I highly doubt she will ever include George because of his stance in the trial where he thought of Caylee as the victim and not Casey.
Now did they know she was perfectly capable of making up the most outlandish accusations imaginable? Imo, yes they did. So I don't think she could have said anything that would have surprised either one of them.
I think Casey was pampered and spoiled rotten and not abused by anyone. But I have to realize that sometimes that is the only way a family can deal with one. Living with a sociopath is like walking a tightrope knowing all the while that the slightest bobble and the family member is going to fall hard.
So while it only feeds the 'beast' it is far better emotionally than to rile the 'beast.'
Your post makes so much sense. Thank you.
I also wonder if it is possible that Casey has something on Cindy that she doesn't want exposed (possibly marital related). That has been my gut feeling on where all this loyalty is coming from all along. Just a thought.