"Then I will watch with you, Juliana. I will need to keep an eye on Talbin through the night as it is, and it will be better if we can watch one another's backs tonight."
Eusebius proceeds to set up camp, unobtrusively helping Talbin where he can, taking on whatever tasks need to be done. Then, later, he will sit again with Rowan and listen to him read.
He asks to be roused periodically to check on Talbin, and takes the double watch with Juliana. In the morning, although tired, he rises early and goes through his forms - this time with a pleasing smoothness and speed.