Rosie's nausea didn't go away, but after several hours of finding a comfortable position, she finally fell asleep with her head resting on Aslan's thigh. The man's slender legs were wide open, with his left foot out of the bed, and Rosie between his legs, laying his head on Aslan's right thigh while holding the cloth of his pants.
Aslan stroked the girl's hair. Rosie's face was getting paler because she kept vomiting. The medicine that Aslan had given her earlier had no effect at all.
Aslan leaned his body against the ship's wall. Taking care of his wife also required energy. It almost exhausted him. It wasn't because of physical activity, but because Aslan always felt restless and anxious whenever he saw Rosie throwing up. He felt like transferring his wife's seasickness to him.
Seeing Rosie being tortured made Aslan feel the same way, so when the girl finally fell asleep, he could let out a sigh of relief and fell asleep while sitting up.