Born in Elberfeld, Reinhardt was a student of Ludwig Strakosch and his wife Hedwig Schako at the Hoch Conservatory in Frankfurt.

There, she made her debut as "Sieglinde" in the Walküre[1] and appeared in a total of ten great roles, among others as "Elisabeth" in Tannhäuser, as "Agathe", as "Butterfly", as "Fiordiligi" and as "Sitâ" in Massenet's Le roi de Lahore.

Reinhardt, who has the advantage of a pleasing presence, is endowed with a beautiful soprano voice, which she uses with taste and skill and feeling," commented The Philadelphia Inquirer review of that performance, adding "she is also an extremely capable actress.

In 1929, she was the "Pamina" in The Magic Flute in the opening performance of the Staatsoper, which was reopened after a renovation, in the presence of the Reich President Paul von Hindenburg.

Guest performances took her to the London Covent Garden (1924–29), to the opera houses of Copenhagen, Budapest, Amsterdam and Brussels, to Italian and Spanish theatres, to the Städtische Oper Berlin.