She founded the Swabian league for bird protection in Germany which would later merge into what became the Naturschutzbund Deutschland (NABU).
Her father Johannes Hähnle was a salt works inspector.
She married her cousin Hans Hähnle who ran a factory in Giengen an der Brenz.
She volunteered as the chairperson of the newly formed bird protection union Bund für Vogelschutz (BfV) in 1899 which was based on the system followed in Austria.
One of the supporters of the organization was Robert Bosch of Albeck, not far from Giengen.