Hello, I have some more information about her.
Helene Elise Hermine Knabe (December 22, 1875-October 24, 1911)
I think her cousins name was Auguste or Augusta.
Born in Ruegenwalder-Muende, Germany,
near the Baltic Sea, to a civil engineer father who
built bridges and a mother who came from a long line
of ecclesiastical and military leaders
Rügenwaldermünde / Rügenwalde became part of Poland after WWII and is now Darlowo. Doesn't make the search of my wife and I easier.
Helene was killed in Indianapolis and it is still an unsolved murder, even after two trials...
She is buried at Crownhill Cemetery in an unmarked grave: Buried in Section 43 Lot 6950 (unmarked).
We want to get a group together to get a stone for her, and wanted to see if some relatives are still around.