Duchess Helene in Bavaria
Helene Caroline Therese, Duchess in Bavaria of the House of Wittelsbach, nicknamed Nn, was a Bavarian princess and, through marriage, temporarily the head of the Thurn and Taxis family.
Her daughter Louisa was born in 1859, followed by a second daughter, Elisabeth, in 1860. Shortly after the birth of her second child she traveled to Corfu to visit her sister Elisabeth, who was very ill. She returned by way of Vienna, where she reported to Franz Josef on the poor state of his wife.
Source: Wikipedia