Cunning? How very droll. I'm really not certain why it is you want us to know that Sheila's fingerprints were on a shotgun -is this a fact?- when a shotgun wasn't used in the murders.
I'm well aware that a shotgun wasn't used----I didn't say it had been, but it had been handled by Sheila which, as usual, was denied as having been, or even in the vicinity at all.