Your saying June being shot in the middle of the night would not make her scream? LOL
Sheila "being so spaced out" is a myth put forward by guilters to try and exclude as a suspected and fit the crime scene. Her medication was reduced by half not long before the shootings, She attended a house party several days before the shootings. She managed to walk across the farm/fields to see Jeremy on the day of shootings.
She used to stay in bed during the week and save her energy for her sons' weekend stay. She had so little energy or awareness of her surroundings her hair was dirty and she had B.O. She showed all the signs of overdose of Haloperidol as it had built up in her system, which was why the medication was reduced by half. At the house party you mention she was spaced out, she had a vacant stare and asked to leave early. Ditto the journey to White House Farm and the evidence of the Tiptree shopkeeper.
It really won't do you any good to live in denial and I just hope that Colin doesn't read some of the posts on this site.