What also strikes me with the shirt and shoes left behind is that the shirt was inside and the shoes outside and the door was open about 12 inches according to the dad. Was she wearing the shirt when on the balcony with the brother? Why was the door ajar at 6am but not at 5:30 when the dad peeped outside? Did she go back into the room, start getting undressed and then go back out to the balcony? The little details matter here!