Regarding the two bodies in the kitchen. It seems to be that there are a few options:
Option 1 - Mistaken Identification
In this scenario, the same body was identified as a female in one instance and a male in the other, thus giving rise to the belief there were two bodies in the kitchen.
In an ideal world, Police would count '1 body, probably male' or '2 bodies, 1 male, 1 probably female' - as it adds more clarity, but on that particular night, it could very easy have been 'I can see a woman' followed by 'I can see a male' from multiple sources, and thus misidentified as 2 bodies, 1 male, 1 female.
I have mixed feelings about this option. I can completely understand the misidentification of gender from a fairly limited viewing angle, and quite probably only for brief glimpses (remember, whichever officer was attempting to see would be risking being shot at. This also leads me to believe the number of officers looking through the kitchen window would be minimal.
On the one hand, this is a tense situation at the farm, with scope for misinformation. On the other hand, it is a potential life threatening hostage situation and attended by professionals. Correct information is paramount, particularly with regard to counting bodies.
Option 2 - Two Bodies Genuinely Seen Prior To Entry
In this scenario, both a male (Nevill) and female (presumably Sheila) are spotted through a window, both judged to be incapacitated. Somehow, between peering through the kitchen window and physically entering the building, Sheila recovers and moves upstairs, where she commits suicide.
At face value, this scenario seems plausible enough, but in a wider context it becomes less so.
If Sheila was indeed incapacitated for a period of time, she would be unlikely to recover in an instant. That isn't to say she was unconscious or anything, but if she was injured enough to appear to be motionless, then she has a very limited time to recover and make her way upstairs. Not only that, she had to avoid being seen and commit suicide without being heard. Finally, she would have to avoid leaving evidence of her presence in the kitchen.
Option 3 - Her Body Was Moved.
In this scenario, the police entered the building and identified her as one of two bodies in the kitchen. They then proceed to move the body to the bedroom and stage, or recreate the suicide position.
This is a particularly difficult to accept scenario, as at this point, the Police have no motive to move the body.
For me personally, Option 3 is discounted, and I'm more inclined to favour Option 1 than Option 2.
Option 1, in my opinion is down to human error, and it only takes one officer to make a mistake for it to be propagated up the reporting chain and repeated (erroneously) in multiple reports.
Option 2 needs some tangible evidence - traces of Sheila's blood downstairs, Nevill's blood on her gown etc.
