My Grandmother was married to James L. O'Shea, son of Philip Jessie O'Shea, Josephine's brother.
The article I'm interested in is the one from September 20, 1877 – The Sun. I found it on Genealogy Bank, but it is very difficult to read when printed.
I too would like to find out what happened to Josephine.
According to her mother, Mary's obituary, she was buried in New Cathedral Cemetery. Maybe Josephine is there too.
I will keep you posted if I discover anything, please do the same.