It sounds like you have a few more pieces of information, but we are both stuck on Henrietta's parents.All that I have found leads to her birth in Washington state and the death index tells me her father's name is Long.Beyond that, I can find nothing.
As for Elvere, she was never married from all that I know.Elvere is my friend's maternal grandmother.According to her, Elvere became pregnant and the father NEVER claimed the child.His last name was Wostak and everything I have found leads to the first name Raymond J. He was involved with the production of TV shows.It appeares that he married and divorced a few times and that he may have children or grandchildren in the same industry.The child with Elvere was a girl named Glenda.Glenda is my friend's mother and she died in 1984.If I have the right Wostak, then his parents are Wens and Gabrielle.
The 1920 census records from Seattle, WA appear to put Elvere's place of birth in CAN.I am guessing that it means Canada.I have nothing else to prove that one way or another.
If I ever come across more information, I will most definitely post it here.I love when others share with me so I share all I can.