Let's imagine instead that all three were innocent and that an unknown party murdered Meredith. What would be the composition of their 'diaries'? Say you, me, and Fulcanelli were all jailed for the murder of someone else.
How would you write about it?
Mine would be something like: "This is a totally ****ed situation. I barely know these people and there's just no *********** way I would be involved with them in murder."
But all three of the accused were instead coyly stating things like: "From what I know of Fulcanelli, he could have easily committed the murder, blamed it on me, and even involved someone else, although I doubt that really happened."
We're talking about what each of the three said and did after they were in custody. They each had representation.
Regardless of their guilt or the correctness of the verdicts, RG, RS and AK all behaved as if the others had more to say about their own involvement. That's what the article discusses.
They were all in the same boat and they'll continue being in the same boat until their release.
Again, I doubt the attorneys had had time to formulate strategies by November 7th, but if they did, their first advice to their clients would have been to shut up and stay quiet. I am sure Amanda's attorneys already realized what they were up against with her so-called "spontaneous" statement to the police; they certainly weren't going to allow any more revelations to come out.
Claudia Matteini's decision to keep the suspects imprisoned for a year came out on the 9th. Up to that point, the attorneys should have been working their butts off in the intervening three days trying to keep the suspects out of prison in the first place, not planning the elaborate mental gymnastics the author suggests in this article.
If they were already thinking about strategy at that point, then they would probably have had an inkling that the two suspects would be tried and defended together as a pair. Having them accuse each other would only weaken their mutual position.
If the attorneys wanted them to accuse each other, they would have instructed them to outright state the other one was lying, instead of writing, "I have been told..." and asking questions like, "Why would he lie?"
The author of this article is simply reading way too much into those writings, just as Mignini read way too much into the nature of the crime. They are using other people to make their own lives more interesting.
As for what you or anyone would have written instead, well, what we need to look at is what Amanda and Raffaele would have written, which, coincidentally, is what they did write. The last time they had seen each other, they were on the same page. By the time they were writing in prison, they had been told by very credible sources that they had given each other up. They had no reason not to believe what the police told them, and that is what shows in their writing, not mutual accusations of guilt.