Daisy and her husband Prince Hans Heinrich XV were the owners of large estates and coal mines in Silesia (now in Poland) which brought an enormous fortune to the Hochbergs.

On 8 December 1891, in London, she married Hans Heinrich XV, 3rd Prince of Pless, Count of Hochberg, Baron of Fürstenstein (1861–1938), one of the wealthiest heirs in the German Empire.

[2] The Princess was the châtelaine of Fürstenstein Castle and Pless Castle in Silesia[3][2] and had a domesticated wolf and four children:[4] During her marriage Daisy, known in German as the Fürstin von Pless, became a social reformer and militated for peace with her friends German Emperor William II and King Edward VII of the United Kingdom.

[2] 'The Private Diaries of Princess Daisy of Pless – 1873–1914, edited by Major Desmond Chapman-Huston, were first published in London by John Murray in 1931.

The diaries describe the Princess's life as a member of the European aristocracy, and include sometimes frank descriptions of significant pre-war political and social figures.

[2] She celebrated her 70th birthday on 23 June 1943 with champagne and a colliery band performance before dying the next day at Waldenburg, Silesia (now Wałbrzych, Poland).