The confusion showed on Delphine's face, she's still considering all of this to be a strange drug induced dream. The mind does get wary after a period of inactivity, so she won't be too surprised by how real this seems. "I'm rather confident in this being an odd dream," this wasn't directed to Cosima as much as it was reassuring herself. It's gonna take a lot to convince her otherwise, because it's simply too far fetched.

But she noticed the smile, and she couldn't help but react on instinct, raising a hand to caress the others cheek. "I highly doubt you're hallucinating, but I can see it being the other way around" there was just a small hint of sadness there, it wouldn't surprise her if it was.