She is frightened because she didn't know anything about the city that was being told her. Also, she is afraid of being a foreigner.
Da-duh was very fond of Barbados and spent her entire life living there, but she decided to go to New York in search of more opportunities and a better quality of life. When she talked to people who lived in New York and were foreigners like her, she was nervous and a little scared.
That's because New York wasn't how she thought. The stories she heard showed a city completely unknown to her. In addition, the experience of other foreigners did not seem very positive and she realized that she would have a lot of difficulties when she arrived in America, mainly because she was a foreigner and didn't know the city.
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