My scenario : (all JMO)
WH knows what time JH and younger kids leave the house in the morning. WH was out of the home by the time AJ came home for Spring Break. I believe he waited for JH and kids to leave the home so that he could enter and retrieve something that he wanted. I do not believe that he knew that AJ was home for spring break. I believe he entered the house and her being there was a surprise. He couldn't let her tell JH that he had entered the home... So I believe he then subdued her, placed her in a vehicle, and then did whatever he did that led to her death. I think he then proceeded to go to that gas station and make the $200 atm withdrawal, (for a purchase that would help him cope with what he had just done) which he had to end up explaining later and made up the story about the phone call and meeting her there to give her money. We know he was working in the immediate vicinity to where her remains were found, so I believe that he knew where to take her simply from driving that road. when he "got chewed out" for being late to work from lunch... I don't think it was lunch at all I think it was just late... Like he hadn't been there yet at all.
All this is speculation, as we haven't gotten any updates. Feel free to pick it apart.
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