Hilma WAS Carl Gottfried Helling's sister. Carl had a brother in Philadelphia by the name of Albert (I'm not sure about Otto). Carl died and left a widow with small children, the youngest was Dagmar. Dagmar was placed with friends in
Dala Jarna. Her mother went back to Norway with the oldest children. Dagmar became a daughter to this family, and remained a family member until her marriage in the 1950's.
She died around 1990 in Vallentuna, outside of Stockholm.
You are my distant relative, Carl would have been my great-grand-father, I'm 67, my mother is 88 and she is your cousin twice removed. I live in Texas, my mother in Mexico. Keep in touch!