It would have been fair, if Sirius hadn't come. Severus wouldn't have, in his place. Still, in comparison to a frilly party after the week they'd just had -- well. Maybe this wasn't the worst option.
"I'm aware," Snape said, perhaps a little too shortly, because he backtracked slightly, making the effort to not just be annoyed by Sirius just for him breathing in the same space. Old habits died hard but this wasn't school anymore. "I asked Neville," he went on. "After -- well. He told me what happened."