Born in Berlin, Winkler was the daughter of a British mother and a German father.
This was followed by training as a photojournalist at the Verein der Deutschen Presse in Berlin; Winkler passed her exams in 1942.
During World War II she married the naval officer Rudolf Betzendahl (1892–1978).
In addition to actors, she often portrayed writers; among other things, she documented Thomas Mann's visit to Stuttgart in 1955.
The Deutsches Literaturarchiv Marbach preserves some of the photographer's portraits of writers.