Well done! I didn't read that part properly
Do you agree with my reason for why she moved?
Actually, this may be the first time that the opposing beliefs are in agreement. If Sheila had killed her family then committed suicide, it stand to reason she'd have been the last to die. If it had been set up to look as if Sheila had killed the family and committed suicide, the killer would have almost certainly have killed her last.
Re June's last movements. Unless there is credible evidence -I'm sure someone will tell me- of June's blood trail between her and Sheila -was she not shot in the legs? Might that have made difficult/impossible a walk of that distance?- it's perfectly reasonable to speculate that she may have been heading for the door to the landing.
I can't help but feel that something must have gone wrong with a planned scenario. Whilst I get that the suggestion of Sheila being the killer was thought to have been necessary, a bit more thought might have allowed her to die with her children and made her 'guilt' more convincing.