Not everybody holds a rifle the same way. In the example you have posted I note the following detail is deliberately withheld, and the rifle in these pictures has a telescopic site fitted to the rifle giving it added weight, which caused the woman in these photographs to adopt the grip she adopted. You can't make comparisons like this without knowing whether or not the woman in the pictures is a professional shooter, or one who has lots of experience firing this type of gunIn addition, there is no 17 baffled Parker Hale silencer fitted to the end of the rifle barrel, which would increase the weight of the weapon, and its balance. With weight of the silencer displaced on the end of the guns barrel, you cannot say with certainty, that this woman would have still held the rifle in the posed and adopted manner. Similarly, I note you didn't post any pictures of the same woman trying to shoot herself in the neck or under the point of the chin, and more importantly from my position, you never posted any pictures of this woman struggling to retain possession of this rifle, whilst somebody a lot taller and stronger than her, was try to wrench it from her - the grip at each of these 3 different stages would not be the same in each instance. We know that Sheila was involved in a struggle with one or more of the four victims she shot and killed, since there are supporting contact marks of sorts on her right forearm, which were almost certainly caused at the time Sheila was struggling or grappling with one or more of the two adult victims, at different times. The presence of the bloodied hand print on the front lower part of her nightdress was imprinted there in fresh blood. Now, I pose the following question for all the numpties in the guilty group to ponder upon, " WHOSE BLOOD WAS THIS BLOODIED HAND MARK ON THE FRONT LOWER PART OF SHEILA'S NIGHTDRESS MADE IN"?, and " AND WHOSE BLOODIED HABD MADE THAT MARK /IMPRESSION"?
You see if it was one of the other 4 victims blood, and it got there on Sheila's hand, coupled with the latest bruise blood marks from the rifles trigger case, together with all the other contact marks which are there for all to see on her right forearm, then of course that would be a compelling argument for the jury to come to the inevitable conclusion that there was contact between a victim or two, or three, or four, and evidence by a reliance upon the bruising and marked impressions upon the top part of her right hand, that proves that Sheila had made a determined effort to retain possession of that rifle at one time or another, rather than repel the rifle had it been pointed in her direction...
The games up for Essex police...