At the time of Jeapes sighting of the rifle leaning against the upper floor window, she was generally in location 2, covering WHITE / RED SIDES at one and the same time. From there she could see the following features on RED SIDE, Main bedroom window on upper floor with the anshuzt rifle leaning against it, the prominently positioned front door, and the downstairs ground floor window to the right of the front door, which she thought was the kitchen window, but which in fact was the dining room window. At the same general time, she could see on the WHITE SIDE of the building to her left, the rear external door via which the raid team would eventually smash down and enter into the farmhouse. I doubt from her vantage point on the corner of WHITE / RED that she would have even been able to see the main kitchen window, because of the acute angle or the view afforded her from there...
Because she couldn't see the main kitchen window from the corner of WHITE / RED, there can be no possibility that she could have mistaken the front door (RED SIDE) and the dining room window (also on RED SIDE), with the rear door (WHITE SIDE), and the main kitchen window (also on WHITE SIDE), because from her vantage point at the corner of WHITE / RED, she could not even see the main kitchen window to her left, on the right side of the rear door on WHITE SIDE, to allow her to make such a mistake...