"Guardian… ever think about the things we pick up? People we latch onto, as if something outside of us could tell us who we are?"
Ana is devastated by the loss of Rasputin, by the loss of someone who helped define her identity and self-worth.
"Rasputin was family to me. A connection to whom I used to be. Now that's gone. He's gone."
Ana recognizes that Rasputin sacrificed himself to save humanity, defining himself not by what others demanded of him, but of what he demanded for himself: to be more than a weapon.
Ana comes away from this with a renewed sense of purpose, and a new outlook on the future.