THIS. Just my own 2 cents on this. I have always said to myself while watching true crime stuff that I understand that family members are looked at first, there is a reason for that. But if I truly did not do anything wrong, I would be screaming from a mountain top to get your investigation with me over and use your resources to go find my loved one. I would be telling everybody that I am innocent and have nothing to hide, there certainly is not a shortage of media around to get that word out. Again, that is just what I would do.
Does anyone find it odd that AG and BIL have not made statements considering some people in the public believe they had something to do with it? SG has a couple times holding out hope mom was alive. I mean, did LE tell them not to say anything? All so odd. There's almost always someone that speaks out. Hell, fD claimed he was innocent. This is such a weird case.
LE and lawyers, including SG would have likely advised against that. It probably wouldn’t do much good for them anyways. Everyone would analyze every move and thing they said with such scrutiny. If they are innocent (which I suspect they likely are) I can’t imagine how all the suspicions would impact them emotionally.