So you've read the 'playing possum' posts!
We don't know if the police heard shots.
Why would she do what?
Recent photos show Sheila's feet were not clean, when up until then the 'guilties' have always argued that her feet were clean.
After the break in there were a lot of the raid team in the house. No one has ever said they heard shots.
Why would Sheila pretend to be dead & shoot herself twice upstairs after the police arrive ?
There were apparently some speks of blood on Sheilas feet. She was found in the main bedroom where there had been two shootings, so not surprising.