This is a bit optimistic.

She didn't die. She was erased from existence. So there isn't a spirit version of her or anyone else in Universe 9 left. They're just gone.

Y-you don't know… Maybe they all go to some sort of infinite abyss universe where all Erased people go. They're hanging out with Zamas, who's still screaming like a bitch.

Oh, no, I bet she was sent to Plague's farm. He supersedes Zeno's power, right?