Since I haven't read the book, I can't name the exact main characters. But likely, there's the Brooklyn girl herself, and perhaps her family members like her parents or siblings, and also her friends.
I'm not sure specifically as I haven't read it. But it might be about the life and experiences of a girl in Brooklyn, perhaps her dreams, relationships, or the unique culture there.
Brooklyn novels often depict the unique culture and lifestyle in Brooklyn. They may focus on the diverse ethnic groups there, like the Italian - American or Jewish communities. The settings usually include the brownstone houses, local cafes, and busy streets. The characters are often influenced by the urban environment, facing issues such as poverty, family drama, and the pursuit of the American dream.
Eilis is one of the main characters. She is the protagonist whose life in Brooklyn is the central focus of the story. She experiences many changes and challenges as she moves to a new country.
The main theme could be the experience of immigration. In 'Brooklyn the novel', it often shows the protagonist's journey from her hometown to Brooklyn, dealing with the cultural differences, homesickness, and the process of adapting to a new life.
I'm not sure exactly as I haven't read it in detail. But generally, it might be about the lives of girls in Brooklyn. It could cover their relationships, dreams, and the unique culture of Brooklyn that shapes them.