Marian links Duncan’s pessimistic view of the world—everything is “production-consumption,” making things “outside” and digesting them “inside”—to her own anxieties around gendered expectation. Even if Peter seems threatening in some contexts, then, he also provides Marian with meaning and a clear path of action. Finally, the reference to the “sargasso-sea” is especially important; just three years earlier, author Jean Rhys had released her seminal feminist novel
Wide Sargasso Sea, which Atwood is likely referencing here.