Let's try the substitution test
"before some stupid black girl tries to be a hero"
It's usually best to not pair gender and race with a pejorative.
"before some stupid black girl tries to be a hero"
It's usually best to not pair gender and race with a pejorative.
If the author was a black woman, I think your substituted statement would be more of a commentary on how she perceives her own role in society.
There are many Black, Latino, Asian, and White writers that will comment on their own ethnic and cultural background in their writing.