The only thing I could find on Zaida is that she and Fred had a son Stanley who was 13 in the 1920 census. That census was taken Jan. 6th so Stanley was probably 14 later in 1920. There is a Stanley Shoemaker in the SSDI, born 7 Aug 1906 and died in Dec. 1966, probably in Jackson, MI.
I also checked for Zaida's family. Her mother was Ethie/Ethel? b 1859 and her brother was Harry G. b 28 Aug 1884. I can't find Ethel in 1930 but Harry married Florence OSBORN in Adrian, MI on 14 Sep 1912. In 1920 and 1930, they lived in Adrian and only had 1 child, daughter Lois b ca 1915. In 1920 Harry owned a hotel in Adrian and he and Florence were still alive in 1948.
If you could find Ethel's death record Zaida may have been buried near her mother.