Correct my mistakes, grammatical and ....all?

For the period of that trip with Miss Moore, Sylvia learns about the new world, the world of the rich people, she found it unbelievable that some people could have so much money; She wonders about the kind of work they do and how they live, She questions why the people she knows are not like that. “Who are these people that spend that much for performing clowns and $1000 for toy sailboats? What kinda work they do and how they live and how come we ain't in on it?” (Bambera…) She only knew about her neighborhood, she did not know such people or such expensive things existed