Stephanie E Day was born on February 1, 1961 to Lester and Bonnie Day. In addition to Stephanie,  Bonnie and Lester were parents to one son, Lane and three other daughters -  Lela, Rhonda, and Bertha (Jolene).   There were also three half-siblings in the family – Wesley, Randy and Nerissa. 

Lester and Bonnie Day joined the Ten Sleep community in 1974 when Lester went to work for Mike Allen.

Stephanie never married but had two children – Allison and Brandon Day.