Hi, I'd start with her obituary which hopefully will list survivors. There is a volunteer at Random Acts Genealogical Kindness who copies obituaries. Go to www.raogk.org, read guidelines, choose California, choose Shasta Co.
OR CAGenWeb Shasta Co. Look-up Volunteers, www.cagenweb.com/shasta/lookups.html .
There are too many William Bailey's to find his death info. Do you have more information about him?