Over the years conflict developed between her husband and her brother, especially over the relationship of the double-duchies of
Schleswig-Holstein and his small appanage around
Sonderborg on one hand and the Danish monarchy on the other. She remained loyal to the Danish Royal House or rather, to her brother, throughout the differences, and acted as his agent with her spouse. In 1810 she worked actively to stop the Duke's attempts to be chosen as successor to the Swedish throne, which were linked with the duke's younger brother
Charles August of Augustenburg becoming chosen by Swedes and then dying, after which
Jean-Baptiste Bernadotte,
Marshal of France and
Prince of Ponte Corvo, was elected. Their relationship eventually fell apart, and Frederik Christian tried to legally limit her influence over their children's future. He died on 14 June 1814, and Louise Augusta took control of the Augustenborg estates and the children's upbringing. The estate was turned over to the eldest son, Christian August, on his return from an extended foreign tour in 1820. From then on she resided in the Augustenborg Castle, where she established an eccentric court. In 1832 in order to give her youngest son, Frederik Emil August, better income possibilities she purchased the estate Nør and Grønwald in Dänischwold near
Ekernførde Fjord in South
Schleswig. She had a close and warm relationship with her daughter and her son-in-law, but her relationship to her sons was tense. She died at
Augustenborg in 1843, when her brother's reign in Denmark had already ended and Christian VIII, her son-in-law, ascended - she thus died as the mother of the then Queen of Denmark. == Louise Augusta in culture and legacy ==