Such a bizarre story. She was allegedly seen in the first day or so and ran off into the cornfield when called to. She must have passed some houses connected to all those fields, and yet she never sought help.Could she have simply got horribly lost and disorientated trying to get back to her car (ie if the dog ran off)? Looking at the map you can see it's just field after field with a grid of roads. But it's also flat, so you'd be able to see any landmarks or follow a road. We may never find out.
I keep coming to the conclusion that if she wasn't having a mental breakdown of some sort, that she was afraid of something and afraid of anyone who was just trying to help her. JMO