Complex sentence: Her students included Ada Adini, Désirée Artôt, Selma Ek, Marie Hanfstängl, Yelizaveta Lavrovskaya, Aglaja Orgeni, Mafalda Salvatini, and Raimund von zur-Mühlen; one source claims she persuaded Artôt not to go through with her idea of marrying Tchaikovsky.
Split into simpler sentences: Her students included Ada Adini, Désirée Artôt, Selma Ek, Marie Hanfstängl, Yelizaveta Lavrovskaya, Aglaja Orgeni, Mafalda Salvatini, and Raimund von zur-Mühlen. One source claims she persuaded Désirée Artôt not to go through with her idea of marrying Tchaikovsky.