Yes, but I think he said she waasn't joining in with the conversation ....wasn't involved at all. I see what you mean, just would have thought anything he knew about paranoid schizophrenia would be more likely to be the violent side and if he was trying to paint a picture of a person capable of shooting her children and her parents he would be more inclined to portray her mood as at least agitated. Withdrawn and not involved would have been a strange choice imo.
I thought Jeremy went out to shoot rabbits, so could have had no knowlege if Sheila had argued with her parents or not.
When he returned to the farm he placed the rifle in the settle, and went home to Goldhanger.. He would havenot known if she was agitated.
On the other hand Colin had allegledy said " she has done it then" after being contacted by the police.
Interestingly he did not believe it was Jeremy at first.
If it was Jeremy the mistake he made was claiming a telephone call from his father. It would have been better to discover the bodies" the next morning.
To be clear I do not believe Mugford about the "tonights the night" phone call, and have always been of the opinion that she should have been beside him in the dock. She was one of the first supergrasses to escape prosecution for turning states evidence.
I don't post much now as we have chewed this cud before, but remain convinced that their is a masonic connection, guilty, or not. Misguided or not Robert was to the fore. I think he convinced himself that Jeremy did it. It was nothing to do with the money, just his belief.