Final answer:
Rossetti's reference to Andromeda in her poem likely connects to the theme of viewing beauty in aspects that are traditionally seen as harmful or destructive, touching upon the subjectivity of beauty and the duality of constraints as sources of pain and beauty.
Step-by-step explanation:
In the collection of excerpts provided, Rossetti's reference to Andromeda in her poem aligns with the broader theme of finding beauty in the tragic or harmful. The selected passages do not all pertain to Rossetti directly, but they offer a lens into the theme being explored across various works of poetry and literature. Rossetti, like other poets, maybe convey that beauty is subjective and can be found even in places that traditionally may not seem beautiful. By referencing the myth of Andromeda, who was chained but subsequently rescued, there is a metaphorical suggestion that constraints, whether physical or poetic, may cause pain or discomfort, yet can also produce or enhance beauty—as seen with Andromeda and the 'Sonnet sweet'. This aligns with the broader Romantic movement as evidenced in other provided poems where beauty, love, and nature are predominant themes.