There is another account of the same visit (right at the start of the video):
https://www.youtube.com/watch?v=lhACS6ck-DwTranscript:
K: I did my check about 10.00 ‘clock and went in through the sliding patio doors and I just stood, actually and I thought, oh, all quiet, and to be honest, I might have been tempted to turn round then, but I just noticed that the door, the bedroom door where the three children were sleeping, was open much further than we’d left it. I went to close it to about here and then as I got to here, it suddenly slammed and then as I opened it, it was then that I just thought, I’ll just look at the children and I could see S and A in the cot and then I was looking at M’s bed which was here and it was dark and I was looking and I was thinking, is that M or is that the bedding. and I couldn’t quite make her out. It sounds really stupid now, but at the time, I was thinking I didn’t want to put the light on cos I didn’t wanna wake them and literally, as I went back in, the curtains of the bedroom which were drawn,… were closed, … whoosh … It was like a gust of wind, kinda, just blew them open and cuddle cat was still there and her pink blanket was still there and then I knew straight away that she had, er, been taken, you know.
Kate McCann in C4 Cutting Edge documentary - Madeleine was here, april 2008