Later in life she served as a ballet mistress. Una Kai retired as Ballet Mistress in 1994. In 1947 she joined the Metropolitan Ballet as a soloist and ballet mistress. She also studied with the renowned Russian ballet mistress Agrippina Vaganova. In 1862, she was engaged as ballerina and ballet mistress at the Stadttheater Hamburg. She currently serves as the ballet mistress for the Carolina Ballet. She became a principal dancer and later, in 1971, ballet mistress of the company. More over, she had been working as ballet mistress in Lviv ballet troop. Suki Schorer is an American ballet dancer, ballet mistress, teacher, and writer. Ballet mistress Agrippina Vaganova had also been one of Legat's class of perfection students. Thereafter, she became the ballet mistress for the Royal Danish Ballet. She was ballet mistress of the Ballets Russes from 1926 to 1929. She was an Associate Ballet Mistress at the Masterpiece Dance Theatre since 1994. Following her retirement from NYCB, she became a famed ballet mistress and teacher. In 1932, she was "ballet mistress and star" at the Sydney Theatre Royal.