American Horror Story - Season 4 - Sarah Paulson Interview

So where does Elsa find you? Are you at, like, a Starbucks?
Well let’s just say they didn’t see the light of day very often.

Ryan said that Bette and Dot might be responsible for dark things.
Yes. Bette and Dot might be responsible for some dark things. When they’re discovered, Elsa in a way, even though it may not appear to be that in the beginning kind of saves them from what may befall them because of their dark deeds. Elsa at least in the beginning seems to be offering them an alternative to what would have happened if they were left where they were found.

Are their personalities different?
It’s not as simple as nice and evil. It’s more complicated in true Ryan Murphy style. One has more darkness in her but not darkness of evil—darkness of depression, of knowing what’s out in the world. The other one is more of an innocent. It’s innocent and more cynical. Even though they share a body, they have different brains and different hearts. They experience everything differently from each one another.

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Read the Full Interview on EW