What is the main idea of Poison by Henrietta Rose-Innes?

"Poison" by Henrietta Rose-Innes explores themes of isolation, environmental degradation, and the complexities of human relationships through the lens of a woman living in a South African landscape marked by decay and toxicity. The protagonist's interactions with her surroundings and the people in her life reveal the emotional and psychological impacts of living in a contaminated world. As she grApples with her own identity and desires, the narrative delves into the interconnectedness of personal and ecological crises, ultimately highlighting the struggle for connection amidst despair.