Marta

Marta is a Mexican migrant farmworker and strike organiser living in the San Joaquin Valley labour camp during the Great Depression. She arrives already politicised, with a sharp awareness of the structural conditions keeping Mexican workers underpaid and poorly housed. Unlike Esperanza, who crosses the border carrying memories of wealth, Marta crosses it carrying grievances and a plan for collective action.

Marta mocks Esperanza because she sees her ignorance of basic labour tasks — such as doing laundry — as evidence of dangerous class blindness. In Marta's worldview, clinging to former privilege while living and working alongside exploited labourers is a moral failing, not merely a social one. The ridicule also serves as a political act: Marta uses shame to force Esperanza to confront the gap between her past status and present reality.

Marta and Esperanza share the novel's central class confrontation — Marta acts as Esperanza's mirror and antagonist, exposing her privilege and pushing her to acknowledge systemic injustice. The relationship reverses dramatically when Esperanza hides Marta from immigration agents during the deportation raid, an act of solidarity Marta neither earned nor expected. This inversion completes Esperanza's moral transformation more powerfully than any personal hardship does.

During an immigration raid targeting striking workers, Esperanza conceals Marta beneath a pile of potatoes, preventing her deportation. The rescue is the novel's most charged moment of class reconciliation: the girl Marta had humiliated and looked down on risks herself to protect her. Marta, the camp's most vocal activist, becomes completely dependent on the last person she would have chosen to trust.

Marta and Miguel represent opposing philosophies of resistance. Miguel believes in patient, individual advancement — accepting a lower railway position in hope of eventual progress — while Marta rejects any accommodation of an unjust system, championing collective strike action instead. Their disagreement remains unresolved, and the novel allows both positions to hold merit and limitation rather than endorsing one outright.

Marta struggles to recruit workers like Josefina because their reluctance is rooted in rational fear, not weakness — they risk losing even meagre security by joining the strike. Marta's impatience with the hesitant majority reveals both her deep conviction and her inability to fully account for the genuine risks solidarity demands of people with almost nothing to fall back on. The novel respects the workers' fear even as Marta does not.

Marta's militancy is personal as much as ideological: her mother's visible hardship in the camp confirms daily that the cause is not abstract. Watching her mother suffer the same indignities she is fighting to end grounds her radicalism in love and desperation. This parallels the way maternal suffering motivates other characters throughout the novel, framing both endurance and activism as different expressions of love under impossible conditions.

Marta is not a villain — she is the novel's political conscience, compelling Esperanza and the reader to confront systemic inequality rather than viewing survival as a purely personal achievement. Although she is confrontational and rigid, her goals are just: better wages and humane living conditions for exploited workers. Ryan portrays her tactics with both sympathy and honest criticism, making her a morally complex secondary character rather than an obstacle for the protagonist to overcome.