Run Eiera
As Oliver heard Eiera's scream and saw the Monster wake up, he swiftly placed his right hand on Eiera's mouth, stopping her from making more noise. Eiera also recognized Oliver's hand and decided not to make any sudden movement.
But it was too late. The Monster already had woken up from his slumber from Eiera's scream. The Monster's green eyes started to travel throughout his body, trying to spot who is in his cave.
Luckily, Oliver and Eiera were hiding behind the pile of bones. The Monster's eyes could not spot Eiera or Oliver hiding behind the pile. But the Monster knew someone is in his cave, so he decided to go behind the pile and see.
Oliver saw the Monster moving toward them. He swiftly grabbed Eiera's right hand with his left and started to move around the pile so the Monster could not spot them. Oliver was walking around the pile while grabbing Eiera's hand and covering her mouth.