Kuncewiczowa’s most famous novel, Cudzoziemka (The Stranger, 1936), remains a landmark in Polish psychological fiction. The novel’s protagonist, Róża Żabczyńska, is a woman consumed by alienation—culturally, emotionally, and spiritually. A failed violinist and an embittered mother, she drifts through life clinging to past resentments, never truly at home in her marriage, her music, or her country. Kuncewiczowa paints Róża not as a heroine to be admired or condemned, but as a deeply human soul fractured by loss and longing. In Róża’s foreignness, readers recognized something universal: the silent struggle to reconcile who we are with who we were meant to be. The novel’s daring structure—blending present events with flashbacks and internal monologue—was revolutionary in Polish literature. It marked a turning point in how female characters could be portrayed: not as symbols or allegories, but as living, breathing, contradictory individuals.