Just wanted to leave a quick comment on how much I've been enjoying this. I think you've managed to convey quite well what Severus is missing or misinterpreting. The thing that strikes me and I'm not sure why Harry is missing it (or the Malfoys haven't taunted him with it) is Severus is still very much in "war mode". The others have had 4 years to attempt to come to terms with the events, but Severus hasn't. Harry seems too focused on the outcome he wants to realize how bad it is from Severus' point of view.