I saw her interviews - her demeanor, communication, rationalization, thought processes seemed off - and reminded me a bit of her son who apparently also has a cognitive disability. She was in a bad abusive situation and reports are he basically swooped in and rescued her. She spoke of him as if she was in awe of him, absolutely devoted to him, which must have been great for him because from what I understand he was not socially that adept or had lots of girls (know he was married once before) - he himself was a bit of an outcast. She was the perfect wife for him, someone easy to trick, who seemed to have an off sense of normal or ability to advocate for herself, who needed to be cared for. They lived in a home with outside disrepair, had poor dental hygiene (she was missing/rotting teeth as was he) and I don't see her as really questioning much including the locked gun room/closet in the basement. The house being a mess also helped create more distraction/ease in disguising things. The kids? His daughter was raised in this and seems unusual, but that doesn't = knowing/or in any way really thinking her father is a serial killer. To me - there is a big leap from being weird, slovenly (Asa/Rex), to being a serial killer. If I were their neighbor, I would have likely avoided them as they seem odd, but I wouldn't conclude he was a serial killer. I think we have the advantage of having different lived experiences, different cognitive abilities imo then the wife, and we have the advantage to knowing who he is now, to be able to identify things that seemed off and should have stood out. But in the moment people aren't necessarily jumping to that radical of a conclusion. And I don't blame his daughter for starting out in denial - I don't believe anyone I care deeply for is capable of this and it would take a lot to bring me to a different conclusion. If he was nice to her and kept a different façade, it is going to take time for her to get there and she will likely need extensive therapy I would think. If his wife had knowledge/involvement I would thin LE would be targeting her as well, what influence does she have to get away with it? I do believe his attorney would absolutely solidify her with his partner reaching out to coordinate/represent. This continues to keep her in control, which I believe he looked to do through his process.
