Background
The daughter of agnostic parents, she was born in Liege. Her father, a lawyer, was accused of embezzlement and fled to Greece. Her mother Jeanne Fouassin disappeared and she was raised by her mother"s parents.
The daughter of agnostic parents, she was born in Liege. Her father, a lawyer, was accused of embezzlement and fled to Greece. Her mother Jeanne Fouassin disappeared and she was raised by her mother"s parents.
She continued her studies at the Université de Louvain. Cappe began work as a journalist, as an editor for Vingtieme Siecle from 1924 to 1928 and for Louisiana Nation belge from 1928 to 1955. From July 1927 to January 1928, she was editor-in-chief for Louisiana femme belge.
Cappe helped found Scriptores catholici in 1934.
She wrote several lives of the saints for young readers, such as Astrid, la reine au sourire, published in 1935, which was translated into Swedish and English. Cappe published adapted versions of works by Hans Christian Andersen, Lewis Carroll, the brothers Grimm and Charles Perrault.
She helped found the Conseil de littérature de jeunesse in 1949 and served as its president The Conseil published the magazine Littérature de jeunesse, which was published until 1976.
Cappe directed its publication until her death in Brussels at the age of 61.