Do we have Dr.Fergusons' discharge letter anywhere from Sheilas' last visit at St.Andrews ?
Amongst the details he wrote,it included" the idea that Sheila was capable of murdering her children,as well as her having spoken of suicidal thoughts ".
Cocaine had been taken more frequently in the year leading up to the murders.
The reduced dose of Haldol would have been wholly inadequate plus the fact that it had passed its peak as Sheila was nearing the end of her last,reduced dose.
Anafranil hadn't been taken,nor had Procyclidine. Because of the high potency of Haldol,which had been halved,the risk of Akathisia was high,hence Sheilas' restlessness and inability to sleep.
In other words,she was a ticking time-bomb,a very very sick woman.