The journalist claimed certain things were said in the statements, but they weren't.
You're right that the last sentence isn't in the summary (statement) of Kate's pre-arguida interview on 6 September 2007.
Hmmm.
That must be the Nacho Abad saga. One of the very few leaks during Rebelo's time. I find it possible that it had been copied for a rainy day prior to him taking over, although that's pure speculation on my part.
Which still doesn't explain where that last sentence appeared from.
A bit of context...
The McCanns' had gone to Brussels to promote an EU-wide child kidnap alert system, and which had received quite a bit of media coverage. And, from memory, both the media and social media were still covering it over the weekend.
https://www.reuters.com/article/uk-missing-mccanns-interview-idUKGOR06572920080411(April 10, 2008 appears to have been a Thursday and I can't now remember how long they stayed, nor which day they arrived.)
Over that same time frame
Corte Real, Paiva and 2 others had gone to the UK to visit the FSS and listen in on some of the rogs (interestingly they didn't even stay for DP's, which was on the Friday). *
*ETA, I think I may have mixed up two trips to the UK. It wouldn't have been the trip with Corte Real, Paiva et al., to the FSS, but a different trip by Rebelo at the time of the rogs. Both tall and lanky. My bad.
On 15 April, there was this article in the Expresso.
In it, Nacho Abado affirms that he had a document to the effect of what he quoted, that the McCanns had "tacitly acknowledged" it's existence (whether he told them the entire supposed quote, or just the bit about "where were you" isn't clear).
It then mentions the fact that this "bombshell" appeared in the media the previous week (which corresponds to my recollection).
https://expresso.pt/dossies/dossiest_actualidade/dos_madeleine_mccan/jornalista-espanhol-contraria-declaracoes-da-pj-no-caso-maddie=f294306It was hardly in the McCanns' interest to have attention diverted to that crying episode. Neither was it in Rebelo's, who needed to be seen as restoring order, including the windy PJ windows.
Could Nacho Thingy have been encouraged to add that bit? If so, hardly by the McCanns. Perhaps he just added it himself?