"I assume bringing a child into the world during a war, when the Dark Lord is after you, isn't something purebloods typically have to concern themselves with," Lily posited. "Now, why would you think that? Sirius can be very family oriented, in his own way." Perhaps not in the sense that Regulus would have preferred, but to Lily caring about the family that you created for yourself was comparable to those you had blood ties with.
"We worked hard to keep the atmosphere in the house pleasant, for the most part. It's much easier to hide out with a baby when that baby isn't fussing because it can pick up on your fear." He had surely gotten a glimpse of just how difficult it could be to keep smiling in the face of mounting dread.
"I remembered having a twin, which turned out to be Peter, and not thinking it odd in the slightest despite how little we look alike or related." Those confusing lingering remembrances of growing up with Peter made the conversation that came shortly after even more heart wrenching. "Ah yes, those moments. I'll fully admit that some of those can be frustrating, but others can seem downright adorable in the moment. Good practice for child rearing. Tell me something, if you don't mind. How many mornings did you wake up to Lilu sleeping in the room?"