My mistake. I believed you to have said the gun went off when they moved it from her -still alive- person whilst it was on the bed.
No, she was lifted to the floor from the bed, then during these informative, the gun was brought to her body - this took place at 9.13am and whilst they had the gun on her body they were gauging whether or not it might be possible to suggest that Sheila could have shot herself using the anshuzt rifle with its sound moderator fitted. But they realised it was touch and go because with the muzzle of the silencer under the point of her chin, the trigger mechanism could only just about be reached and activated, and it was whilst the senior officers were pondering over this and efforts to try and make it fit into that scenario, that the trigger was activated and to everybody's concern a shot was discharged under Sheila's chin! Nobody had checked the anshuzt rifle to see if it had any ammunition still in it! She got shot at 9.13am, and as soon as it happened the rifle was whisked away from her body and stood at the main bedroom window (DC Oakey/Henderson took photograph no. 23 afterwards), whilst Sheila's body was put into the recovery position on its right side! Blood from her mouth and neck spilled into the bedroom carpet and was covered up later by the open face down bible once her body was rolled back into the suppine position, and the rifle at the main bedroom window was then brought to her body and her death scene was staged, shot twice with the silencer removed from the barrel of the gun! DS Jones collected the silencer later that same morning, with by that stage the second team of SOCO in control of the staged crime scene!