The death record of Zoa Rock is listed under Alma Rock.
Her burial is listed as French Cemetery in New Bedford.
"Find a Grave" has a discussion about where this is and it appears to be the Old Sacred Heart Cemetery on Mount Pleasant Street. Not the New Sacred Heart Cemetery which is also on the same street.
Her husband is listed as the informant so he was still alive in 1909. The New Bedford library has a death index for all years 1909 to 1971 so you could find his death year there. They also have New Bedford deaths records on microfilm.