The wounds on Nevill were made by the rifle. Sheila had no wounds to her body besides her gunshot wounds. Sheila had no blood on her fingers only on her outside palm by her wrist and it dripped from there down her arm to her elbow. That blood dripped from her wound when she tried to plug it with her palm/wrist.
Your supposed photos are never what you claim just like the photo of Nevill's right forearm which you tried to claim was an exit wound above his left elbow. You just pretend photos show anything you like instead of accepting what they actually show.
I am afraid you are drastically deluded, either that or you have got your ryes inserted the wrong way round in your eye sockets, left in right, and right in left, and back to front. Perhaps a visit to spec savers might give you a fighting chance of being able to see things for what they are. Not only that, but you will also then be able to see that huge hole you have been digging for yourself to fall into anytime soon...
Steady as you go, you never know when that fall is coming. On the other hand I can post up photographs, and documents, whenever I choose to, that might help you over the edge, nay, When the time comes no doubt you will leap over the edge of your hole all by yourself - simply because you know as well as I do, that Sheila killed the others, but not herself...
Steady as you go...