KM states that the accuracy in the book comes from a series of journals that she began drafting at the end of May 2007 on someone's recommendation, possibly the priest she counts as a daily friend - l will confirm later.
She refers to MM as 'my daughter ' in the introduction to the book. This has been flagged up as unusual by a language expert (again, l would need to confirm the source later).
It does give an idea of her personality, or at least, the personality she wants to portray. She seems somewhat downtrodden in the relationship with GM. Note previous posts relating to her annoyance at him leaving the tapas restaurant without him, and he seems to not be as present - he works away, his career comes before hers, that sort of thing.
I noted when she says she went for a run she was hurt the rest of the group were on the beach without them. She seems insecure and lacking in confidence. But that doesn't quite fit with a newly qualified doctor going around the world to NZ to work for a year. Maybe this stems from the need for IVF knocking her.
KM describes being rude to the lady upstairs when on the night of the disappearance, the neighbour asks what all the noise is about. KM is irked at her response. She says she shouted something rude. A little hint, perhaps, of what was to come; the world of the McCanns should be everyone's priority. That self centeredness that's been mentioned frequently. It was evident in the beginning of the book, describing her early life...no one buys the book to read about KM going to church on a Sunday when she was little. But it does seem the religious thing has always been a thing, IYSWIM.