Petterson was born in
Mexico City on 11 May 1938. Her father was the son of
Swedish parents. Pettersson recounts beginning to read with the children's books of author
Monteiro Lobato. She was later introduced to the works of
Charles Dickens,
Luego vino Salgari and
Sor Juana. Pettersson intended to study medicine, however she married young and had three children, but continued to write. She began to take courses at the
Facultad de Filosofía y Letras of the
UNAM. ==Career==