In this sentence, are the brackets used correctly?
Mayor Trujillo was quoted in the newspaper as saying "due to the city budget crisis, [she would] have to cancel the Founder's Day parade this year."

Yes, because it correctly emphasizes the words she would, meaning that someone else may have made a different decision about whether to cancel.

No, because the words she would should be enclosed in parentheses.

Yes, because they are clarifying a quote and making the sentence work better.

No, because the words she would should not be enclosed in anything at all as a part of the original quote.