Very interesting diagram. Makes Sheila's death/assault look separate from that of June's... yet both in the same room, and we're lead to believe that Neville was shot here as well at some point.
The two scenes within a scene would seem to argue different time frames for the shootings.
Were both June and Sheila incapacitated, Neville pursued, then the killer returned to complete the task?
Or June incapacitated, Neville pursued, Sheila returns to finally kill her mother then lies down on the 'undisturbed' side of the room to kill herself.
Which parent usually slept which side of the bed? Interestingly there was research done some years ago which revealed a tendency for the men in heterosexual partnerships to sleep on the side of the bed nearest the door.
Excuse my ignorance, but I'm confused on one point. What does DRH actually mean? Notice only some of the 'circles' have shell drawings. These circles can't all be shell casings as the numbers reach the 40s yet only 25 bullets were fired.