"Not here." Yuri frowns at her in confusion. Is she...?

"Not in the universe where I am right now," he clarifies. "Are you -- you didn't come through the rift, did you? Are you still in your home universe?"

This has happened before, or at least he's heard about it happening to other people. Sometimes the people you meet in the Dreaming aren't even on planet Earth, though good luck doing anything with that knowledge.