I don't think a whole body was found. Last night a reporter said "body parts" and later it was referred to as "human remains". I hate to write this but I think they only found pieces of her and I don't think it was necessarily the elements that got to the body but animals. I also saw people with nets scouring the area, like to pick up more evidence, from that Fox news helicopter video.
Yesterday I was sure I saw a shallow grave under the pop up tent but now I'm sure I was just seeing a shadow in a bad video. I have now seen better quality videos of the scene from the helicopter and you can see several men clustered around an area of bushes off to the side of the tent, looking at something on the ground. It's not a big thing, whatever they are looking at, or you could see more of it. In some angles of the video you can see a bit of yellow or orange color that could be her hair. JMO
So in any case, cause of death may be hard to determine, especially if they only have a partial body.