[Admittedly, Sokka is in a little over his head. When he agreed to be her fatherly figure, he had kind of assumed that she was just an ordinary kid, similar to Kai (okay, very much NOT like Kai) Ikki, not some Princess Tutu character who's finding heart shards for some prince somewhere. He can barely keep this weird story in his head by itself, much less make educated guesses about things and give her any sort of solid direction.

But that doesn't mean that he can't at least be there for her. When she reaches around him, Sokka puts his other arm around her and gives her an embrace. Parenting, am I right?]

Shh, shh. Why would he be suffering because of you? You didn't do anything to him.

[Or at least he's got no reason to think that she had.]

Besides, even if this Raven thing came back... the village can take care of it. We've handled worse things.