I noticed her fidgeting some, too. But overall, she seemed calmer. It could be a combination of meds and her trust of Greta. I think most people respect for Greta's journalistic integrity, which is probably why they allowed her in their home in the first place.
I pay a lot of attention to body language, too, as well as to surroundings. The clutter on the table, not to mention the cat, just reinforces that Cindy isn't completely obsessive about her house. That's a good thing. She seemed like she was having a normal conversation with a friend over coffee. I'm not surprised she hasn't really broken down in public because I'm sure she is trying desperately to hold it together, telling herself that there will be plenty of time later to grieve. George, on the other hand, looked almost despondent in the tape of the previous interview.
They are more sympathetic these past few days. It seems they are going through the stages of grief and now they are no longer denying that something horribly wrong has taken place. I'm not saying that they haven't obstructed justice - that's not for me to judge - but I don't think their involvement is sinister either.
I'd like to point out that the most interesting segment of the show is when Bernie pointed out that the coincidence, if that's what it is, involving ZG and the apartments as well as the address they found in the car is really eerie. There is more to this story for sure.