If this was the case why was she seen earlier that day skipping along the lane in high spirits with the twins? If she was that incapable of doing anything then why was she left in charge of 2 small children.?
Skipping along the lane. Have you got a source ?
She went to see Bamber on his tractor. One of the Foakes's saw her & said she was in good spirits.
CC looked after the children & June & Nevill were assisting in looking after the children at WHF.
The WS's of Bamber & PB show Sheila was 'tired', 'non responsive', 'not paying attention', 'easy to control', 'not speaking' & 'going to bed'. Hours before the massacre.
The Haloperidol was having it's nightly effect & it's doubtful anything would wake her. If she did wake, it would take a big effort to walk down the stairs, let alone carry out a military style massacre. My 'Effects of Haloperidol' thread show this.