Why the obsession with Alastor? Severus searched his memory. Evan Rosier; what did he know about Evan during the war?
Ah! Was he responsible for the Auror's eye? Nose? Leg? Bloody hell, Alastor Moody was scarcely more sane than Bellatrix, it was impossible to guess what might have happened in a battle he'd never witnessed.
What he did know was that any tenderness Bellatrix displayed was profoundly suspect. If she wanted to 'help' Evan become more like her, there was a great deal to be very, very concerned about indeed.
"It seems to me that we all have a chance to live different lives than we did before," he said, deliberately vague and nonconfrontational. "I'm enough older than you in this little reality that I think more peace and less animosity would be a grand thing."