This isn't a perfect match, but there's a slim chance it might be pieces to the puzzle. I've included the link to my gg grandmother Ikke Sage Busboom. Her mother was Estje Habben who passed when Ikke was very young. The details are outlined in the media 'The Sage Connection', however the details for Ikke's family branch were omitted as most stayed in NE with only one daughter, Emke Busboom, moving back to IL with her husband, Adolf Bluhm. That's where the Kuhlman potential comes in, as Adolf Bluhm's mother was Anna Kuhlman.
Again - these aren't perfect matches by any means, but at least the names are present and accounted for and possibly someone else who is working on these families might know more of the story you are looking for.
Best of luck!