In this excerpt, the narrator reflects on the profound sense of loss and identity, suggesting that even if they and Zoya are still alive, their sense of self and purpose have already been diminished or ended. The statement conveys a feeling of existential disconnection, implying that life no longer holds the meaning it once did because of emotional or psychological circumstances.
It occurs to me that, even if Zoya and I are still alive, my life has already concluded. It will soon lose it and there will be no reason to continue without it. You will see, we are one person. We are Georgizoya.