We don't know for certain if it was Sheila's blood, all we can say is it was either the same blood group as Sheila or a mixture.
Yes you do. But do not want to accept it.
Sheila was the only victim who received a contact & close range shot in an area of high blood flow.
Of course the human blood in the silencer was her back spatter blood.
No more sick insinuations about DB please.