If the census above is your grandmother and her family, then I am certain this is the manifest for her brother Vito and their mother Anna Maria Ricciardiello.
The 1930 census says Anna arrived in the US in 1906 and Vito in 1920. This manifest however says that neither Anna nor Vito were ever in the US before. Frankly, I think the 1930 census is in error concerning Anna's arrival (common), if for no other reason than that she has no children born between Vito who is 21 in 1930 and Lena who is just 8 years old. The best explanation for this dry spell is that Alesandro was in the US while Anna and son Vito were in Italy during the intervening years (also quite common).
New York Passenger Lists, 1820-1957 about Vito Russoniello
Name: Vito Russoniello
Arrival Date: 1 Dec 1920
Birth Year: abt 1908
Birth Location: Italy
Birth Location Other: s andrea di conza
Age: 12
Gender: Male
Ethnicity/Race/Nationality: Italian (South) (Italian)
Port of Departure: Naples, Italy
Port of Arrival: New York, New York
Ship Name: Providence
Lines 15 and 16, sheet 1:

Sheet 2:
