And she's coming back to life and returning to her role as a major and playable character, or I'm passing on this game like I passed on SC5.
I always find it kind of funny how people are always so willing to accept the last word on something as the only way it can be, and blindly take a company or person behind a game's word as gospel. If another fan says "This character can be brought back to life in the next game," people beholden to the company will say it's absolutely impossible and come up with all sorts of reasons for why it can't happen. But then as soon as the company actually does it, they pretend they believed it could happen all along.
I had this fun turn of events over Motoko in Blazblue, where people claimed she "couldn't" become playable because she was never shown fighting anyone, or because the game already has too many animal-based fighters, or too many NOL characters, and so on. But as soon as she was announced, suddenly she was the best idea ever and an inevitable addition.
As I mentioned, Lost Swords matches the way they ended SC5, so it's most likely a sequel that isn't using numbers.