1. Well why not phone Jeremy? He is the immediate family member nearby, with a full command of the evening's build up, and so far nothing has happened except Sheila has a gun in hand. She has never shot anyone, no one in the family or whole community has. There is no real reason to expect her to use it, let us be realistic without the benefit of hind sight.
2. SC's found state is just fine if she only shot people with a long gun, and we do not know what she did to clean her hands after the killings. It also seems she was downstairs because her period started, her underwear is in the bucket after June went to bed, and she is found with san prod in place. The underwear will only be bloody before the tampon remember. So we can deduce she went downstairs after going to bed, and probably just before 3 am, waking Nevill.
3. Trial judge said JM testimony was not to be relied on, check. Holly?
1). Why call his son who was four miles away, so not nearby, then wait 15 plus minutes for him to arrive?. "Sheila had gone crazy"... remember?, and she needed disarming asap. You're under the illusion that Nevill was some weedy whimp who desperately needed assistance to subdue his frail daughter, and so wasted precious time on the phone, when there is no record of his son ever having helped pacify her before. They lived separate lives and hated each other's guts - " We don't get on... I don't like her and she doesn't like me" and "She's used all the weapons in the house before" - waiting police were told. But that was a false flag to scare the $hit out of them and make Sheila out to be armed and dangerous, a latter day Bonnie Parker, when nothing could be further from the truth. Nevill was a tough, strong farmer, a wartime fighter/bomber pilot, a lifelong weapon-user who knew the damage they could do, and who towered over his daughter by a good 9"... yet you say he allowed her to slip past him with a fully-loaded rifle to take potshots at his wife and grandsons!? What did he think they were?... fairground ducks?
2). His mouth was severely damaged so he must have been spitting out plenty blood, and any attempt to beat him on the face and arms with the butt and barrel whilst close up, as there most definitely was, would inevitably result in blood being spattered onto her face, arms, hands and clothing. Yet there was not a trace on Sheila when she should have been covered in it, so she'd need to do more than wash her hands after such a confrontation.
3). Ten out of twelve thought otherwise.