If, and this is a big if, we had the death penalty in this country, I was on a jury that had taken this case I would have to vote no. The police simply didn't follow up the other evidence at the time.
Yes, having been in a violent relationship, I would agree that your self confidence is battered, but I would also say that you would not pass muster under a fostering board. They would have noticed that his wife wasn't quite into it. Also the review board would have picked up on the violence in the home. Well I am assuming they would. If Billie Jo had mentioned it, it would have been investigated. All of this is assumption of course. I believe that these 'incidents' in the home have been escalated to procure this man as the murderer.
The police did not investage thoroughly, therefore as a member of a jury I would not be able to give a guilty verdict.