Despite having conceded that the last time Jeremy saw Sheila was 6 hours before the massacre. Lets recap on those witnesses
Tora Tomkinson. Only revealed her information in 2013. It does not refute the evidence of Sheila's responsibility.
Len Foakes eye witness account shows Sheila was not tried or zombie like.
Pam only spoke to Sheila on the phone thus could not make a judgement on her physical state.
Sheila was able to physically walk to Jeremy's tractor. That was the last time Jeremy saw her as you now admit.