The Soldier blinks in sleepy surprise at the revelation of Elle living with an angel. Then they think a moment, remember her helping to carry Castiel safely to the Invincible, and ask, "Castiel lives with you?" The Soldier has mixed feelings about Castiel, but they are at least half positive, and the negative ones mostly focus on how they compare (to an angel, which is probably a dumb thing to compare) and how much worse and more thoroughly Castiel was tortured. "Good. Good. He shouldn't be alone."