Is it possible that when EA returned to the Shops area, someone else took her from his trunk and dumped her somewhere? As in she was first in his trunk and then handed off to someone else? I know it seems crazy to hand her off, but then again it seems crazy to kill someone that you were last seen with by 3 other people, stuff them in your trunk, squeegee your car while at a location that obviously has video surveillance (Kroger gas pump), leave a ton of cleaning supplies in your garbage as well as a note listing evidence, and lie about a bunch of things that can be proven as lies....
Or could someone else have been involved from the beginning?