I'd like to just go back to this thread re Sheila's second neck wound. The smeared blood has been discussed a few times, and three possibilities have been put forward.
Someone put their thumb on the wound and smeared the blood.
Her head dropped forward momentarily and the blood smeared (I think I read that on the other forum).
The front sight of the gun moved slightly and caused the smears - this possibility means that the silencer was not on the gun at the time.
Which of those seems feasible, or are there any other possibilities? I'm interested in the third one, although I'm thinking that the smears would have been slightly lower down because of the position of the front sight, and the gun would have had to be slightly twisted for the front sight to smear the blood.