Haack remained in demand as a stage actress for the rest of her life, for example as Mrs. Higgins in My Fair Lady during the 1960s.

[1] She was initially cast as Lola-Lola in the film The Blue Angel (1930) and her contract was signed, but she was ultimately replaced by Marlene Dietrich.

[2] She mostly played love interests during the silent era, later she successfully transitioned to character roles as a mother, wife, grandmother or wealthy lady.

Haack played her last role in the television series Ein Heim für Tiere in 1985, 70 years after her film career had started.

[3] The daughter Hannelore Schroth was already buried at her side the following year, as was later her son from her third marriage, Christoph Kantapper Köster (1953-2012).