Mystery Monday... The Plot Thickens

A few weeks ago I posted a family mystery titled What Was Elvira Up To? Since that time I've dug deeper and found some very interesting items. 


Timeline:
*Eleanor's born on 22 May 1914, in MT...SSDI
*Elvira married Fred Goldhahn on 23 Jun 1914 in Geraldine MT....marriage record at familysearch..org
*Elvira and Fred divorced before the 1920 census...1920 US Federal census
*Elvira married Walter Lofstedt on 20 May 1920...marriage record at familysearch.org.
*Walter was also reportedly married to Elvira's sister, Ruth. There are three children with the Lofstedt surname. A girl was born in 1915 and twin boys in 1917. Ruth died in 1919....family interview, census records.
*In 1930 the twin boys are living as 14 year old boarders in CA. The girls is living with Ruth and Elvira's parents in MT.....1930 federal census
*Elvira married John Whiting ...Gust Borgreen probate 
I still have no idea where Elvira ran off to when she went missing, but she obviously had a baby while away. 
This is all news to the remaining family members, who were all either too young to remember or weren't born when this all transpired. Next step is to track down Eleanor's death certificate and try to determine exact place of birth. Then order the birth certificate to try to determine paternity. I have Eleanor's marriage record, which shows Walter Lofstedt as her father. But, she may have just used his name when he and Elvira married. This is about as mucky a mess as I've found in my family research. I'm determined to sort it out as best I can with the records available.