He pointed to the giant rift in the sky. "There. You came through there too, right? We're not the same world that Amestris is, and there's nothing saying that there can't be more than one version of the world you came from."

It was a weak argument and he knew it, but he wasn't finished yet. "For me, the thing Al and I transmuted didn't live very long. It was buried behind the house. Granny even helped me dig it up and it didn't even have any of mom's physical characteristics." Again, another weak argument considering he had no way to prove this right now, but just maybe it would spark...something? Al was a lot better at this than he was.

"Look, whatever you've got against this guy, fine." Pushing her about it wasn't going to do him any good now. He could hopefully find a way to deal with that later. "You're still letting me talk, so you've got to at least be thinking about what I'm saying."