It always pays to cross check. I decided to do an idle check for Iris on Ancestry.com. A family record was added for her that indicates the following:
Marriage #1 = Albert Owen Bates (Children: Glowrene, Jacqueline, and William)
Marriage #2 = Eldred Floyd Charley 30 May 1950 in Reno, Washoe County, NV (Children: Curtis and Kevin)
So that solves the mystery of why Iris would have been in Hawaii without Eldred.
The family record at Ancestry includes a lovely photograph of Iris as a young woman.