Although Seán is second generation Irish from St Giles, Rosa comes from the countryside.
Like so many rural people at the beginning of the Industrial Revolution, she had little choice but to move to the city for survival.
And while her introspective and introvert nature were well-suited to her previous rural lifestyle, the noise and sensory overload that she experiences in St Giles is closer to her vision of Hell.
Engraving of Dudley St, Seven Dials by Gustave Doré from his book with Blanchard Jerrold entitled London: a Pilgrimage (1872).