He stares at her back, hearing We broke the only plane and hearing in echo We got into an accident that broke the plane and You can't make me leave now that I'm here.

But Steph arrived safely and didn't say anything about anyone back at the farm being hurt. So the first translation, right now, can be completely ignored.

"Well, isn't that convenient." Sokka turns to watch her with the blocks and his fists clench when she isn't careful when she doesn't realize that the slightest crack in the ice walls could mean the difference between surviving a storm and freezing to death. "I mean, hey, why radio me to ask if you could come when you can just drop in, invade, and then offer no way for me to get rid of you unless I go back with you? It's not like I have a convenient way to communicate or anything - like a radio."