After Charles' death Katharina entered the convent of Sant'Ambrogio della Massima in Rome as a novice. She made complaint where a cult of personality had developed regarding one of the sisters. She then became seriously ill. Convinced she was being poisoned, she managed to get word to her cousin, Gustav Adolf, Cardinal Prince of Hohenlohe-Schillingsfürst, who immediately removed her from the convent and brought her to his estate, the Villa d'Este in Tivoli, to recover. There she was introduced to the Benedictine monk Maurus Wolter. The princess confided in the monk, who instructed her to report it to the Holy Office. This set in motion an investigation, during which a number of irregularities at the convent came to light.[1]
In 1860 Von Hohenzollern asked the Maurus and his brother Ernst, also a Benedictine, to accompany her on a pilgrimage to the Holy Land. The princess became sympathetic to their views for the restoration of monastic life in Germany, and had the political and financial resources to assist. The following year, they received permission from their abbot at the Abbey of St. Paul Outside the Walls to found a daughter house in Germany.[2] In 1863, the Wolters established an abbey on the site of a former Augustinian monastery on Hohenzollern land in Beuron.