Legend says that Eidolons appear to l'Cie who have lost hope, because of their Focus. [ She pauses, frowning deeper in agitated concentration. ] But I don't think they have anything to do with the fal'Cie.

[ It's... probably unlikely mention of Lightning's Eidolon has filtered down to Raine, even if she ever found reason to mention it to Aerith. Admitting it is still strange to her- probably even to a point beyond admitting that she's a l'Cie in the first place. ]

Mine won't appear to me here, anyway. And Hope didn't have one.