Unfortunately, Sobek discovered that he was quite tired: even though he needed less sleep now, he had not slept for an entire night for several days. So he ended up falling asleep this time, which wasn't a good idea at all.
From his point of view, the little girl would have remained stationary in the same place where he had left her. Jocelyne, however, had other plans.
When the sun rose, she opened her eyes and found that the 'spinosaurus' hadn't yet awakened. She immediately understood that this was her chance. Very quickly she got out of the bed and, being careful to not make any noise, she walked off into the forest.