"The daughter lived in New York on a street near Central Park"
The first recorded Jewish people to settle in New York arrived as refugees in 1654; today around 12% of the city is made up of Jews or people of Jewish descent.  As the USA did not directly experience the atrocities of the holocaust, its Jewish population was still high after WW2, as well as prosperous, and in time a number of European Jews sought to emigrate there from abroad (though this was after strict immigration rules became reduced in 1948).  A well known Jewish-New Yorker who has written about her experiences during the Holocaust is Irene Frisch

Living near Central Park, as this lady does, suggests a comfortable, middle class income.