This record looks promising. Apparently the image is available through a FHC, unfortunately all are still closed due to the pandemic. There is no image at Ancestry.
Name: Agnes L. McNamara
Event Type: Death
Event Date: 5 Dec 1905
Event Place: Brooklyn, Kings, New York, United States
Event Place (Original): Brooklyn, Kings, New York, United States
Gender: Female
Age: 34
Birth Year (Estimated): 1871
Father's Name: Chas. Kean
Mother's Name: Maria B...
Certificate Number: cn 22305
Record Type: death
GS Film Number: 1324112
Digital Folder Number: 004006583
Image Number: 00315
Indexing Project (Batch) Number: I07993-3
Record Number: 110
Citing this Record
"New York, New York City Municipal Deaths, 1795-1949," database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:2WFV-YBS : 3 June 2020), Agnes L. McNamara, 5 Dec 1905; citing Death, Brooklyn, Kings, New York, United States, New York Municipal Archives, New York; FHL microfilm 1,324,112.