YOU!!! MISS AWESOME!!! ARE NOT ALLOWED TO WRITE YOUR OWN AUTHORS NOTES EVER EVER EVER EVER EVER AGAIN!!
This was so poignant, and there was so much packed into this short little glimpse into their lives.
Snape is so insecure about certain things. And he has every right to be. But instead of thinking it through, and asking for the information he needs, his way of getting it chafing and abrasive.
It's a good thing Remus is toughened up enough to deal with it.
And then there's the underlying threat of Sirius. He's always there in the background. He's always a part of the equation. And I think even if Sirius had died instead of going to Azkaban, he would have been an issue in Snape's mind.
This story was really well constructed! I think if you look at it again, you'll see that.