Well, I am not blind, and certainly not bitter (you are nuts!) - I did see with my own eyes in the Dr statement that she complained of sleepiness. Which is no wonder, she was on a dose of more than 400 mgs per month, which is a crazy high dose.
She was not on such a high dose at the time of the murders - she would have had about 50 mgs in her system. A big difference.
In reality we don´t know her state at the time of the murders. Her bed hadn´t been slept in and she had possibly taken a bite to eat later than the rest of her family.
Those things point to her having been restless.
I am waiting for your spiteful, nasty answer. 
She was administered her medication monthly not every 2 weeks so the dosage was 200MG not 400MG. She still complained to acquaintances about being sleepy and tired after being injected with 100MG, including on the night of the murders when she put down the phone without saying goodbye to go to bed around 10PM.
The bed had indentations from being slept in, whether she was so tired she went to bed without getting under the covers or Jeremy pulled up the covers to make it appear she didn't sleep is unclear. The police said it looked like someone slept on top of the covers.
I fail to see any advantage in trying to pretend she didn't sleep given how late he claimed the incident happened. His story has enough problems without the added problem of claiming she had never gone to bed at all that night. Jeremy alleged Nevill phoned him at 3:15AM to say at that point in time Sheila was in a crazy rage and running around with a rifle. What would she have been doing between 10PM and 3AM if never going to bed? Why would she be up all that time and while everyone is in bed suddenly go into a rage and decide to go kill them all?
Cases where family members are killed always include some kind of dispute with the family which results in the actions not the schizophrenic going around killing everyone in their beds which is a planned execution.
Those with schizophrenia who kill usually have history of violence BEFORE they develop schizophrenia or become violent while on drugs or alcohol. In virtually all cases of murder the killer stopped his/her medication or wasn't being successfully treated. This all cautions against Sheila being the killer as does the fact she didn't evne know how to use the murder weapon and had no interest in guns. She would have picked a different weapon. But the most important evidence to look at is the physical evidence.
The notion the blood shot all over the rifle as Nevill was being beaten but none got on the killer's clothing is simply not credible. Nor is it credible Sheila would not have been injured during the course of brekaing the but of the rifle against Nevill's head, she woudl have been holding the stock where it broke. Nor is it credible she would not have gotten any GSR on her body or clothing. But worse yet, she can't have killed herself and then after she was dead put the moderator away, moved her body flat and then put the bible in a pool of her own blood that formed after her death.