Quite possibly but as it is Insp Paiva who alleges the conversation it is not unreasonable to take his interpretation at face value. If Kate did say it and meant it a different way then fair enough but the very fact there is no mention of the incident in her own book just adds to the suspicion.....much like surpressing the Smithman efits.
Paiva is either being accused of lying or misinterpreting the incident. It can't be both.
His interpretation of the alleged phone call being a 'turning point' suggests that there may have been other suspicious behaviours displayed by the McCann's which may have in turn led Insp Paiva to question their role in the disappearance? He did after all spend time in their company.
Why does it have to mean something sinister because she didn't mention it in her book? I expect she had lots of dreams - surely you wouldn't expect her to mention every one of them?
I still can't get over the fact that 'grown up' policemen actually decided that an investigation had changed direction because of a DREAM!!! What sort of professional policework is that? It would be laughable if it wasn't so sad for Madeleine.