Aren't you overlooking something quite elementary dear Watson? It is often said that when a woman changes the direction of her life she often changes her hairstyle. In those early photographs her hair is long. In her deathbed photographs her hair has been cut relatively short. Quite significant in my mind. 
I take on what you say Grahame and my view is only that, even i will agree with any guilty member no one will ever know what truly happened second by second that night, that part is lost forever the advent of time will be that reason, however i was thinking what was the very last thoughts running through her mind ,the good side to Sheila won her mind any emotion means more than any hairstyle.
Mertol, When I studied suicide, some years ago, my tutor, Prof Jock Young - a world renowned criminologist and sociologist - lectured about the small, seemingy insignificant aspects of suicide which could reveal so much about the state of mind of the deceased. Your work as an undertaker appears to have given you similar insights to Jock's.
Those small, tidy piles of clothing on the beach, so meticulously folded, and so often found replicated in different circumstances and different forms among suicides - even as a last shower, or a bucket of clothes steeped in water - belie any notion that suicide is always an utterly irrational act. Suicide is often an entirely rational and measured response to intolerable life circumstances, Jock said.
Even deranged suicides may perform a last act of ritualistic tidying or cleaning, putting the last vestiges of their life in order, reclaiming a fragment of control in a situation that otherwise seems completely out of control. Thoughts of the happiest times might be entirely consistent with such circumstances.
