I agree with you on this Mike and it is one of the reasons why I question Sheila's guilt. I cannot accept she was accidentally shot by the police.
The fact that she was accidentally shot by the police does not describe exactly how police ended up being responsible for shooting her! That 'she was accidentally shot by police' is misleading because she wasn't shot accidentally! In the first instance the rifle said to have been used to fire both shots was resting at a first floor box room window at about 7.15am - if Sheila had already been shot twice by that stage (7.15am) her body can't have been on the main bedroom floor in possession of that rifle at one and the same time (7.15am). She can't have already been shot twice by that stage (7.15am), and if what I am pointing out be true, then cops must have known that Sheila had not shot herself and committed suicide by that stage, either downstairs in the kitchen, as per the 7.35am, 7.37am, 7.38am, 7.42am and 7.45am, or upstairs on the main bedroom floor after 8.10am. Yet, the cops it was who settled on treating these five deaths as four murders and a suicide, where Sheila shot and killed the other four victims, then supposedly then used the gun on herself and she took her own life! Well, she hadn't shot herself with use of that rifle by the time it was presented at a first floor box room window at 7.15am, so cops must know the true circumstances surrounding her death, and in particular the fact that Sheila was shot twice. The claim that the TFG found Sheila's body on the bedroom floor in possession of the rifle soon after entering the premises has to be false by virtue of the fact that the gun was resting against that first floor window from 7.15am, onward! During the performance of 'informatives' by senior officers gathered around Sheila's body after 9am (until 10am) who's task it was to try to identify a number of different ways in which the tragedy could have unfolded? These senior officers know how the anshuzt rifle from the first floor box room window, ended up in the possession of Sheila's body! These very same senior officers must have known who collected the anshuzt rifle from the box room window and brought it to the main bedroom, and the time it was moved from one first floor room to another (main bedroom)! These self same senior officers must have known at what moment in time the rifle had been brought into the main bedroom and placed on the bed in-between the two bodies of Sheila and June Bamber on the bed! These very same senior officers must have known who amongst them had staged Sheila's death scene on the bedroom floor with use of that rifle, and when these senior officers told TFG officers to make out their notes, and reports, along the lines that the bodies of the five victims had been found where PC 'David' Bird (SOCO) had eventually photographed them from 10am, onwards...
So, if the term 'cops shot Sheila accidentally' is anything to go on, then we can safely say that on both occasions where Sheila did get shot (once across the throat during a struggle in the kitchen, and a second time once her body was moved by police from on top of the bed, onto the floor) that these shootings of her by police were not accidental! But shoot her they did...