[Whether not Cosima has clocked that Abella is crying, there's still clearly sympathy in her tone.]

Um, first time I was here, I'd been working on a cure for a terminal genetic illness. Here in Thedas, spirit healing was keeping my condition stable, but I wasn't the only member of my family with it and spirit healing isn't, uh, a thing where I'm from.

[She doesn't know enough about Abella's world to know if there's any kind of magic there, but it's not important to press for now.]

Came back cured, the second time. I remember finding the cure, at home, too. I'd be lying if I said that wasn't a major relief.

[Even with what she knows, and what she suspects ... she still believes there's a world where her sisters exist and where they have a cure now. It matters.]