content: If you look at 1:51, there are 3 people hanging from the window - the girl hanging under the balcony and 2 people hiding behind a pillar on the balcony. It looks like one of the 2 people behind the pillar got onto the balcony to help the hanging girl back up.  I assume her arms got tired from hanging there so long and she was afraid of falling. You can hear a woman's voice arguing and urgently saying something just before that, and I don't know French but I assume that was her telling the person to please pull her up.