[ She doesn't acknowledge the first part; surely neither of them are picturing Aerith herself taking up arms against Sephiroth on her own. ]

Maybe it could, but I don't think so. Either way, you won't be there. You're not the same Sephiroth we left behind.

[ Crucially, she thinks. This one doesn't seem to be exactly the same as the one who'd found his way into their Midgar.

He could become 'that Sephiroth,' but... ]

We can't do anything about it now, anyway. We're all stuck here. It's out of our hands.

[ At the moment... ]