Garth's co-worker said he found his mom. But I am unsure of that timeline for that story. He could have found her after he watched videos until 3. Or He could have found her when he came home at one? Either way Chad wasn't there in that version of the story. So if he found her earlier, Chad could have explained to him a bunch of nonsense which would be pretty abusive and made it hard to react normally to the police. He was quiet while Chad was reactive for the police. He must have been pretty afraid of what was going on. I know they seem uncaring, I think they have been lied to so much that and it makes them look bad. For example, it is possible Emma thought they were looking for pioneer bones which is why she wasn't upset in the car tape. Of course, I don't know but obviously they have been manipulated amd lied to. Really sad to em.