The description doesn't feel quite as focused as it could be, becoming a bit of a slog by over-explaining a whole host of variables and other minutae; I'd almost stopped reading prior to the logs (which would have been a shame, it starts to pick up at that point).
I don't know if the post-test interview really adds anything to this, it's a reaffirmation of stock "anomalous delusion"; it doesn't feel like it has much of a unique flavor.
I do wonder what was cut from earlier drafts? I have the impression that the found documents are — mundane?, too reserved? — not quite sure how to articulate it, but I've only a glancing impression of the writer there, and I'm curious if they had a stronger voice that was toned down to a basic drone about kids these days, which didn't really make me feel anything. It seems like a sizeable enough chunk of content, but didn't have much of an impact on me.
No real complaints for the phone call itself, which was pointedly disturbing with a few well-placed footnotes, and aesthetically, the final log does a fine job of portraying the scenario as it unfolds (I feel though, the final summation could stand to have more details on the actions of the Family when alone with the D, and in their final hours).