She did die. She couldn't have come back to life, even though she tried to do something like that.

[Enoshima... Hinata's expression has steepened just talking about her, but he shakes his head slightly before continuing.] But what happened to us took place in a... different situation from yours. She was still involved in it, but it wasn't her herself, but an AI of her.

We were in... a program. It was originally supposed to be for rehabilitation, but when her AI was uploaded, things went bad.