This is all MOO of course. She seems to be utterly beyond distraught, from what we saw via the media in the early days of his arrest. Then we learned of her cancer treatments. And of course she has an adult son who is in her care with some disability. Her home was destroyed via police searches, as was the yard dug up. If Rex was her sole income source, what a MASSIVE, MASSIVE stressor. Where will she turn to now for income? She is psychologically trying to process what the man she married most likely did, returned to a house that's a disaster, not sure where her next meal will come from with him behind bars. I think we've read she's communicating with him not because she supports him, but to obtain input from him to possibly determine where bank accounts are held so she can continue on. I haven't read she wasn't cooperating with LE - they ruled her and her kids out immediately, I thought. Maybe she's just so distraught she cannot even function if they need her help and I imagine they do. She can provide crucial input on his comings and goings over the years, but maybe right now she and her kids need some GOOD psychological care.
But I grant her 1,0000% slack in not expressing public comment about the victim's families. Right now, she has to take care of herself and her world was uprooted beyond what any of us can imagine. If she wasn't part of his crimes, I'm sure she has sympathy for the victims, but they were his victims, not hers, and she needs help to get her life back together, if she even can.