[Homura's best guess is exactly what Madoka needed to hear — she's almost instantly reassured, despite it all, and she manages the tiniest of smiles.]

That's exactly it. [this whole conversation has been the two of them trying to meet — trying to remember something about their world that they still share — but they've been hitting a barrier just barely out of each other's reach.]

[Homura doesn't know what a Nightmare is, but at least she understands the concept. they still have that in common. it's enough for Madoka.]

I don't know what's going on ... I couldn't even begin to guess why the home that you know is so different than the one I do.

But I do know that you're still Homura-chan, no matter what. [her very best friend.] We can figure it out together, right?