Her book says she checked the patio door and it was closed.
She does too (page #93), but gets the physics a bit wrong. For she seems to suggest the breeze came in through the patio door. Whereas (if I understand the layout correctly the door closed toward her so the breeze was going in the window and out somewhere else and at quite a rate for the curtain flapped as well on reopening the door. If the patio door was closed as she says, it still has not explained how the air flowed through the building. Matt in one of his statements talks about the shutters of the main bedroom being raised but no one has ever mentioned that. Were the windows of both bedrooms opened?
At around 9.25pm, the interviewee went into his apartment and Madeleine's apartment to check on the children. He states that the door of the bedroom that was occupied by Madeleine and the twins, was open and that there was enough light in the bedroom for him to see the twins in their cots. That he couldn't see the bed occupied by Madeleine, but as it was all quiet, he deduced that she was sleeping. That the light was not from an artificial source inside the apartment, but perhaps something coming from outside through the bedroom window. That it seemed to him that the shutters of the Master' bedroom window were open without knowing if the window was also open.
In the rogatory statement he says
4078 'I am sorry, you already said how long you think you were in the apartment for, I have forgotten''
Reply 'It can't have been more than a couple of minutes, because, erm, I mean, there was no, you know, it was just sort of a check and then it was back really. I remember sort of being able to pivot here and be able to see this room door was open as well and those shutters weren't down, they were just curtains and that was fairly, fairly light as well. And I just sort of came back out really through the same way and shutting the patio doors'.
Nothing about the shutters in the 10th May statement.
It is odd that no one else mentions that the shutters to Gerry and Kates room were up.
There is nothing about checking the window in the main bedroom in the book. The other factor could be central airconditioning ducts may have allowed air to be drawn up and out.