The link provided is wrong...quite OFTEN the case.
The correct: http://cdalibrary.org/
Shirley was identified as living in Harrison, ID, a small town (pop 203 in 2010). She was also known to be living in Kellogg (with family?). She was shown as being 85.
--The address in Kellogg is shared by 365 persons, with various town names following: 1 1/4s Rt 3 Bx 3 628. One being a William Bunton.
--The address in Harrison was identified by one source for 1989.
The logical newspaper for an obituary is the Couer d'Alene press; a search of the online obituaries did not produce one for her. Many elderly do not have obituaries published due to many reasons: length of time in the community, health issues, personal desire, family wishes, movement away from home of record, etc.
--The most logical senior home would have been in the Couer d'Alene area.
I checked the Obituary Daily Times, a database of obituaries published, email data send twice daily of new obit locations published. No information was found.
You may know where she was living with family, if so, or at another location.