Sarah is uncomfortable having to be the person who attempts to explain what's going on with them, genetically speaking. She's nowhere near qualified, for one, and for two, this is all shit Cosima's already explained to her. Back home, in another universe. The whole thing is just... weird.

"The disease was a mistake. The infertility wasn't. I don't get how they're connected, though. That's all your thing." A quick glance at Cosima—there's still so much she doesn't even know yet—and then to Helena, checking for her reaction to all of this.