Madeleine was not strange, she was a normal, inquisitive, innocent child who, if awake and called to from the window by name, would more than likely go over to see who was calling her. I honestly find it hard to believe that some people on this board have ever had children or know very much about how they may behave. children of 4 are frighteningly naive and will believe pretty much anything you tell them, whoever you are.
Along comes Mr Abductor. He quietly raises the shutters from outside just in case the window is unlocked. Eureka! it is. First stroke of luck!
He opens the window and starts quietly calling....what? Does he know Madeleine's name? He
has done his homework!
If he
has done his homework he can guess there are three children in that room. Calling the name of one of them is very risky because all three might wake and scream, but never mind, he tries it anyway. Luckily he has opened the window of the one apartment in the resort which contains two children who won't wake no matter if he screams Madeleine's name at the top of his voice accompanied by a brass band.
More good luck. Only the targeted child wakes (luckily she sleeps a lot more lightly than her siblings), doesn't cry, and happily makes her way over to the window and allows herself to be lifted out. The shyness mentioned by many of the staff has miraculously disappeared - lucky, lucky, lucky.
The luckiest Mr Abductor in the world carries off his prize.