So, what we have, ladies and gentlemen, is ' a suicide', right there at the beginning, right after the firearm officers caved the door to the farmhouse in...
Sheila pulling the barrel of Woodcocks rifle toward her own neck, as he was trying to enter the kitchen!!
I am with Woodcock', I do not imply that he deliberately shot Sheila! If he had done, he would have been justified in doing so, because by that stage she had fired 23 bullets killing four members of her own family!!
The first shot across Sheila's throat was accidental involving circumstances beyond the control of PS Woodcock! The struggle between the two (Woodcock and Sheila) spilled into the kitchen. The voices 'overheard' (refer police log), were the voices of Woodcock and Sheila engaged in that struggle!!