The bible seems very staged to me.
Sheila was in a psychotic rage, yet picked up and opened a bible before killing herself.
A suicide note ? I thought her rage was sudden and spontaneous from an out of control woman. Did she write the note during this episode, or was it written beforehand ?
How did blood get onto the bible ? After shooting herself once, her hand would have gone to her neck wound as an instant reaction. She would then have to pick up the bible, open it and put it next to her.
But why not put the bible next to her before firing the first shot, as she would be expecting to be dead after the first shot. Or at least immobilised.