This study examines how gender-based oppression, emotional abuse, socio-economic and political exploitation undermine peace and justice in postcolonial African societies. It uses Irene Isoken Oronsaye-Salami’s Sweet Revenge as a case study to explore how patriarchal and capitalist structures intersect to marginalize women, appropriate their labour, restrict their autonomy, and undermine their dignity. The study adopts a combined Marxist-feminist and semiotic approach and employs qualitative textual analysis of dialogue, metaphor, and symbolism. The findings reveal that women are systematically dehumanized and reduced to their reproductive, domestic, economic, and sexual functions despite their essential contributions to family and society. Through Sota’s treatment of Aisosa, the play exposes how emotional abuse, sexual objectification, economic dependence, unpaid domestic labour, and unequal access to resources reinforce gender inequality. The analysis further shows that socio-economic dispossession extends beyond the household, as women’s exclusion from political decision-making perpetuates structural injustice, weakens social cohesion and obstructs sustainable peace. However, Aisosa’s transformation from an oppressed wife into an economically independent and politically influential woman highlights women’s capacity to resist, exercise agency, and participate meaningful in public life. The study argues that sustainable peace requires gender justice, economic empowerment, political inclusion, and structural reform. It therefore calls for legal, economic, and cultural measures that protect women’s rights and strengthen their participation in decision-making. The study concludes that lasting peace remains unattainable when women are excluded, exploited, and silenced.