This article says they were inside the "cabin" (word used in article) when they heard the scream. One of them even went over to the door to look outside.
Then, later, they went out.
Where does this tale of gardening by the roadside carrying a purse come from? This article references a purse that she had with her later when she went to look around outside.
As far as the property "dispute", some guy either bought or was trying to buy land. He camped on what he thought was the land, but it actually was not because he didn't know where the property lines were, so someone told him. And, i suppose, he got off this person land. I don't think it was this woman's land.
Idk, i saw the initial video and it seemed like, okay, maybe this is a clue. Then i saw another where she'd given nicknames to a bunch of people. The only one I can remember is "Voldemort". After about ten confusing minutes of nicknames and stuff that doesn't pertain to hearing screams, i gave up.
ETA: "Plethora", i am going to say two or three. In this situation. Jmo moo imo
ETA: you can't just randomly sell land plots. It has to be surveyed and a there will be a drawing (that's not the right word, i am sorry) with a detailed description in the county deed book. I guess most people know this.