"I am not going to leave you, Sam. You have my word. I had myself assigned to your room so I could be here with you." He let Sam squeeze his hand, squeezing back. "It's alright, Sam." He sat quietly for a moment, letting Sam catch his breath.
"Do you want to get up for a while?" he said after a pause. "We can talk. You may drink if you wish." Castiel expected the last think Sam would want to do was focus on what just happened or go back to sleep. He knew how humans felt about nightmares.