There was a neighbor who came from across the street (I think) who was talking to 911.
MHG’s father was walking to the house up the driveway from the barn. I think he went back to the barn when he saw the cops were there.
There was some kind of anticipation—at least by MHG—of something going badly. IIRC, she was the one who asked RC to come a week early and had her dad come up, too.