After several seasons in Italy, she came back to the United States, and established herself under the name of Cappiani as a teacher in Boston and New York City.

[8] In Vienna, her teachers were Josephine Fröhlich and the tenor Passadonna; in Italy, they were San Giovanni, Vanucini, Gamberini, the elder Romani and Francesco Lamperti.

Her husband died three years after their marriage, leaving her with two children, a son, also named Gisbert Kapp, and a daughter, and with only a small pension with which to support and educate her family.

[9] On 13 May 1860, Kapp-Young made her operatic debut, singing with her brother, Frederic, in La Juive, and under his guidance, while he sang Eleasar, her Rachelle was, a success.

After that, she appeared in London under the auspices and at the residence of Viscountess Palmerston, her crowning triumph being in a concert given by Queen Victoria in the Golden Room of Buckingham Palace to the King of Belgium.

An enthusiastic torchlight procession in her honor closed the evening, but she was unable to acknowledge the ovation, as that night, she was at the point of death by suffocation, in consequence of the ill-advised vocal exertion.

In September, 1868, the city of Arezzo bestowed upon her, for her singing in a festival, the gold medal of merit by King Victor Emmanuel II's decree.

[9] A few months after the Arezzo festival, imagining herself to be well, Kapp-Young accepted an engagement from Max Maretzek for the Academy of Music in New York City.

At that time, she discovered in her vocal art some fortunate secrets which enabled her to overcome the difficulties brought on her by bronchitis, and the knowledge of which, thereafter, made her famous as a teacher.

[9] For several years, Kapp-Young taught in Europe, but at the request of American pupils, who came in numbers to study with her, she removed to the U.S., settling in Boston.

It was here, when singing in a Harvard University concert,[9] and acting under the advice of Dr. Eben Tourjée [Wikidata], that she changed her name from Kapp-Young to Cappiani.

[8] When the board of examiners of the American Federation of Musicians was organized in Cleveland, Ohio, in 1884, she was the only woman elected among eighteen professors.