Obit dated 16 Jan 2007 available www.Idahostatesman.com/obituaries. Obit does not give parents names for Ruth, although they did preced and 2 sisters and her husband, Henry J. Diener in 1993; survivors include 1 child and a sister, Helen.
From Washington Births, 1891-1919, parents are: Edwin Danielson, b. 1897, Sweden and Chelata/Charlotte Erickson, b. 1894, Sweden.
From 1920 & 1930 Census, the 2 sisters preceding would be: Maxine E., b. 1918,WA and Florence B., b. 1926.