Hospital in New York

My Grandfather's sister, Syverina Amundsdatter Simansen, died in a hospital in New York City. The Ships Passenger List shows her in the hospital when the SS Cedric landed in New York on May 17, 1903. At the end of the passenger list is a "Record of Aliens held for Special Inquiry". In the column "Cause of Detention" it says "L.P.C. w. + ch in Hosp." Family history says she died in childbirth. How can I get a death certificate for her? What hospital did immigrants go to and where were they buried. This is before they entered the US. Thanks. Arden