How do I know this?
Well she had control of a loaded rifle, and she pointed it in the direction of each of the other four victims and simply shot them!
Having personally met hundreds of 'lifers', in jail, many of who were convicted on murder and armed robbery offences, I soon learnt valuable lessons - one such lesson is that a person in possession of a loaded gun will shoot you if you give him reason to! Sometimes a gun man doesn't need a reason to shoot anybody! If somebody in possession demands you hand something over, if you do this or that, it would be unwise not to cooperate! Somebody who carries a loaded gun is prepared to use it, with or without justification, or otherwise! The person in charge of the loaded gun can shoot you, and kill you!
Sheila was this person inside whf, she had the loaded gun, she shot the other four victims, for one reason or another! Anyone who relies on the pathetic argument that despite Sheila having possesion of a loaded gun she would not have been able to over power Neville Bamber (bullshit)! I have personally been held at gun point twice in my life, it was a terrifying experience, I did what was being asked of me, I was being controlled! The size of a gun man or woman compared to the size of a victim under their control has little if any bearing on the question of a victim being capable of somehow controlling or getting the better of the gun man!
Sheila had the loaded gun, Neville Bamber would have appreciated that if he did not try to handle the situation in a particular way that in all probability his daughter would shoot him! She did shoot him, and these are the facts!