Of the three “living” young people in We the Living, Kira is the most alive. She thinks deeply about what she wants from life, what her values are, why she wants them, and how she will achieve them. Her career, her music, the men she loves — to form and strive for such personal values is what it means to be alive.
Kira’s great cause is her own life, not the state or her comrades. Why does she try so desperately to save Leo from tuberculosis, alcoholism, spiritual decay? Not as a duty or a sacrifice for his sake, but because he is her highest value.
The state can destroy Kira physically, but not spiritually. She more than any other character is aware of the injustice of the collectivist state, but her focus remains solemnly on life, for as long as she still has breath in her body.