I did a google earth on Sipes Ave in Memphis, it seems to be a residential area with a little bit of woods around. In my google earth look it does not appear to be a place that is near to gas stations and businesses, the closest ones are to the west of the site but several blocks. This tells me this was more than likely a body dump. I would say it would be a local who dumped if this is a body dump because there is not an exit, only an overpass at he closest point to I-40 which I-40 would be a fast get away route for someone dumping.
A thought crossed my mind, not sure why this would even come to mind but being there is a concentration of homes in the immediate area I am wondering if this woman was at a party and OD'd and the party goers freaked and dumped her instead of getting medical attention. She doesn't seem to be from ten surrounding neighborhood as no one has been reported missing from that area that we know of. So why would this person be in this area? It's just a odd place to me to find a deceased body.