Her father got a scholarship, so the family lived in Rome in Italy and in Paris in France for a couple of years and moved back to Stockholm in 1913.
In 1935 Bianca Wallin married Gábor Kornél Tolnai (1902–1982), a Hungarian Diploma Engineer from Budapest.
After High School Exam in 1929 at Nya Elementarskolan for girls – Ahlströmska skolan at Kommendörsgatan 31 in Stockholm she wanted to become an artist.
Bianca Wallin began to study for one year, in 1929–1930, at Edward Berggren and Gottfrid Larsson's Artist School in Stockholm to learn figure painting and drawing.
As teachers at the school Edward Berggren instructed in painting, Gottfrid Larsson in sculpture and Akke Kumlien in materials science.
During the years 1932–1934, her teacher at the etching school was Emil Johansson-Thor, a painter and graphic artist.
To get motives to paint she travelled a lot both in the north and south of Sweden, Scandinavia and other countries in Europe.