Speaking on the eve of Maddie's eighth birthday she admitted that the possible missed chance came at breakfast on the day she vanished, when the little girl disconcerted her mother by asking: "Why didn’t you come when Sean and I cried last night?"
The 43-year-old added: "Not for a moment did we think there might be some sinister explanation. But it is [now] my belief there was somebody either in or trying to get into the children’s bedroom that night, and that is what disturbed them."
She added: "So haunted have I been ever since by Madeleine’s words that I’ve continued to blame myself for not sitting down and making completely certain there was no more information I could draw out of her."With hindsight, it could have been her ‘one chance to prevent what was about to happen and I blew it."
Madeleine, who was three, disappeared from her bed in the family’s apartment in Praia da Luz on the evening of May 3, 2007, while her parents were eating at a nearby tapas restaurant – as they did every night of the holiday.
Kate who still wants to believe her daughter is alive reveals her anguish an emotional book, called Madeleine out Thursday.