CNN reported that she died of asphyxiation.
Didn't he have a home only about 5 miles away? Maybe he kept her there until he murdered her. Maybe he had her tied up with something over her mouth and nose so that she did not breath, thus asphyxiation and when he discovered she was dead he took her to the trailer and buried her.
Being buried alive is a such a horribly nightmareish thought. I just cannot comprehend, emotionally. I hope we do not find this to be totally true.
This is truly evil.