Catherine spent time with her husband, but more frequently alone, at Mildenstein Castle in Leisnig, which thereby developed into a private residence of the Saxon Electors.
Katharina menghabiskan waktu bersama suaminya, tetapi lebih sering sendirian, di kastil Mildenstein, Leisnig, yang kemudian berkembang menjadi kediaman pribadi para Elektor Sachsen.