Originally Posted by
Wyvern
She's not exactly... required to deal with this Lostbelt.
We still have Mash, our Command Seals, and the Barrel Replica in case there's something hard to kill in need of a good killing. So Arcueid isn't necessary for us to win. Problem is, that outside of a possible Grand being present, Rasputin, U-Olga and ORT being there, there's nothing else we know about the Lostbelt. So theorizing whether Arcueid is gonna be there or not is mostly wishful thinking, partly people hoping for juice TYPE lore.