Hi, No deaths for Annie - the Only BACCILE deaths are for John and Anthony. It is quite possible that Annie was still living at the time the Giovanni/John had passed away.
or - she may have passed away out of Province.

The Full registrtion should show if Giovanni/John was married or a widower at the time of his death. [if known to the informant ]
The FULL registration of Death is the best source of information.

OBITUARY - if published may prove helpful.
Since the deaths occured in Vancouver - Obituaries may appear in the Vancouver Sun or Province Newspaper or both.

I am house sitting /child sitting -again - till the 19th of December - this time. Don't know if I can make it into downtown Vancouver -before then.
If You send me a reminder - I will be very happy to search the Registrations as well search for an Obituary.

Contact the Cemetery office at Mountain view cemetery - they may be able to tell you if Annie is also buried there - She does not show at the Cemetery Burial site or the B.C. Cemtery finding aid.
She was born 1906 -so it is possible that she passed away after 1990 and would not show in the BC Vital Events Index.
She does not appear in the B.C. Cemetery finding aid - online.