Lookout
You don’t believe Sheila was a schizophrenic. You don’t believe Sheila was religious. And you believe the sound moderator was involved in the crime.
Yet you believe Sheila done it. 
I don't believe schizophrenia had been the right diagnosis,as having a bad temper kills more people than being schizophrenic and Sheila had had a temper. More a personality disorder.
I don't believe that the moderator was used in the killings.
I said that Sheila had tried putting the thing on the rifle but got it cross-threaded deeming it useless for what it was intended for and because of its unsteady state,marked the fireplace. It would have been used to bash her father with.
99.9% sure of it having been Sheila------------JB had NO part in the killings.
Sheila had not been religious.She'd been brainwashed and so emulated her mother.