Tauriel looks to her youngest, and Sans-Serif looks with her. As soon as he realizes what Tauriel is trying to do, he gathers up one of S-4's hands in both of his once more. "just follow mom," he urges his brother quietly. "it's gonna be okay, s-4."

Then he tries to breathe with Tauriel as well, to show S-4 how it's done. In, and then out. As he exhales, he squeezes S-4's hand a little more tightly, like squeezing water out of a towel or air out of a balloon. When he breathes in again, he loosens his grip. And all the while, he offers what little healing magic he can muster - whatever he can give is the least of what S-4 deserves, and anything that might soothe him is worth trying.