It's not something that can be done until we're out of here, but if her ghost is still around- which it should be, ghosts last for a long time- then I can find it.

[He pauses there for a moment. Why did he say 'I' instead of 'Yuuko'?]

...or Yuuko could. One of us could.

It's not the same as having her alive again, I know. But it would be a chance to talk with her, at least.