6O doesn't need to know that the dream was real. She doesn't need to know that she was infected. She doesn't need to know the Bunker is destroyed.

She doesn't need to know both of them are dead.

But 2B does smile, a small upwards curl at the corner of her lips. For once, one can see it reach her eyes; she doesn't have her visor. Unlike 6O, however, 2B hasn't downloaded the sign language. So it might be strange to see her dig into the pocket of her jump suit and type what she wants to say.

I'm glad to see you, Operator