Ritsuka considered that for a moment. It was an unusual situation, to say the least, even in her experience. Which must have made it even more bizarre for him.

"So maybe... What you saw were memories of the version of you from that world?"

It was the most logical thing she could think of. Somehow, being outside of either world entirely, maybe it was possible. After all, the Waver she knew at Chaldea wasn't even from the same timeline as her, either.