But they didn't know it was her "last book".
Quite so Misty - hindsight is indeed a wonderful thlng. So soon after Madeleine's disappearance - they would still have very high hopes that she would be found at any moment - so the book would have no 'sentimental' significance after such a short time.
They immediately handed the written timeline to the police who were with them at the time. It could even be that the police asked them to write it down?
Extract from Russell O'Brien's rogatory interview:
'But anyway Dave Payne said to, errm... there were two members of the PJ had arrived, there was a guy I remember being almost shaved bald head, quite dark complexion, and a second one who we kind of nicknamed 'baby face', who did our fingerprinting about a week later, errm... and those two were there and Dave was... was saying, you know, 'Shouldn't we', you know, 'Why are we sitting here, shouldn't you be on the radio, shouldn't there be more people here, shouldn't there be...', you know, 'this should be on the radio, it should be on the television' and, errm...
I recall 'baby face', or his colleague, saying 'No media', and, you know... and that was full-stop and then turning round to me writing the timeline and saying 'That's what we want', fair enough. Errm... huh, and that's really it.End quote