[2] Walter Schwarze, who published her biography in 1928, wrote: "Among the rhetorical arts ... music took the first place, and much handwritten music for piano, viola d'amour[a], flute and voice was in her repertoire, which was crowned by Handel and Telemann.

The newest arias could be heard, and Eleonore wrote many a poem in this format or following existing melodies, and she expressed the impact of the music when she narrated how Orpheus sang ..."[2]In 1759, she married Count Georg von Münster zu Surenburg (1721–1773), Hofmarschall of the Prince-Bishopric of Osnabrück.

[4] The couple had six more children, including a son, Count Ernst Friedrich Herbert zu Münster-Ledenburg, Freiherr von Grothaus.

[4] In 1783, she was appointed by Charles William Ferdinand, Duke of Brunswick-Wolfenbüttel to educate his daughter Caroline, then age 14, the future wife of George IV.

[4] Von Grothaus wrote around sixty poems, three stories and three stage works.