Complex sentence: The al-Hillis' two daughters both survived the attack, one aged four years old was hidden under the legs of her dead mother in the rear footwell for eight hours even while the gendarmerie were on the scene.
Split into simpler sentences: The al-Hillis' two daughters both survived the attack. One, aged four, was hidden under the legs of her dead mother in the rear footwell for eight hours even while the gendarmerie were on the scene.