She was found in a cemetary near a giant cross. That implies to me that maybe the person who killed her had some remorse, which implies someone who knew her.
Picture of the Cross Here: http://www.stategazette.com/story/1793716.html
The body was found in a place that is normally covered in kudzu, approximately 100 yards from a tall metal cross that sits high on a bluff. The cross is visible looking south from Highway 78, close to the Obion River Bridge.
Kudzu is always thick - it covers everything. The kudzu did not die this year until after Halloween because Tennessee didn't have freezing temps until then. It takes a frost down in the 20s to really kill the leaves, so it died quite a while after her body was left there.
I doubt in the dark at night with their mind racing that this person studied the plant life. They might not have realized it was kudzu in the dark. I think this was a crime of passion and was quickly covered up. I think the person wasn't familiar with the fact that in winter only roots and vines were showing at the back of the old cemetery.
That giant cross is the 2006 Tornado Memorial