You would think the curtains would be fully closed at night unless you wanted access to that door. Just my observation on crime scene photos like the crumpled curtain behind the sofa where both dogs later alerted.
You might think so.
Other people who might be capable of appreciating the desperate search for a missing child might think disturbing curtains to look behind them on the chance she might be there seems a perfectly normal and appropriate thing to do.
At the time it obviously wasn't considered important enough for the Judicial Police to carry out forensic checks anywhere in the room let alone the windows and the curtains.
The Judicial Police were there at the time with total control of the investigation ... why was it do you think that they didn't attach the same significance that you and I would imagine any properly trained investigator whould do to all areas of the crime scene?
After all they were the guys taking the crime scene photographs on which you set such store and the other forensic evidence yet they managed to miss the staining on the wall behind the couch which I think might have been tested later and found to be snot or some such thing.
Not forgetting their sloppiness in not bothering to look inside any bags seen lying around on their watch.
