Remington didn't understand what Nathaniel had done at first. He didn't realize the kid was taking on the head injury himself. Remington just figured he was being healed like in the infirmary back at TJS. But Nathaniel was in rough shape, probably never had a concussion in his life. "Hey.. come here.." he said gently, pulling Nathaniel over and letting the djinn rest upon his shoulder.
"No, Nathaniel, I can't go home without you. If something happens to me, and you're able to return, do it. You understand me? I want us to try and get out of this together, and I'm going to do all I can to make that happen, but if it's not possible, then I order you to leave me behind." If Remington had to get forceful, he would, because Nathaniel couldn't stay here. This world would be too dangerous for the kid. He had to get back, regardless the cost.