Help with some New York City Genealogy - repost

Another genealogy assignment which is easier than the last one. You will almost certainly need to be based in New York City or possibly Italy as it might require some digging in some of the archives. I need to find the *maiden name* of the mother of Rosa Borelli (nee Gorga). Her mother's name is Theresa 1863-1950 and while she was born in Italy, she moved in the US specifically Kings New York. She is NOT Mary Theresa Murphy as another researcher suggested. She was married to Francesco (Frank) Gorga 1856-1936 Although I think this was before they arrived in this country. I assume that Theresa's maiden name would be listed on Rosa's birth certificate (06 Mar 1904 in New York) or on Rosa's marriage license to Emil Borelli in May 1924 in New York. I will want a copy of the evidence you find. I have found every great great grandparent's last name but hers. I previously posted this and had someone BS the research. Let it be known, I have no problems opening up a dispute.