Sara Wacklin was born in Uleåborg in Österbotten and had to support herself as a governess from an early age. At the same time, she trained as a schoolmistress and later set up schools for girls in Finland.
In 1844 she moved to Stockholm, where she wrote her one work Hundrade minnen från Österbotten, 1844-1845, a historical, Romantic-inspired depiction of the high and the low, strikingly often seen from the perspective of the weak, also of women. The work, which is interesting as a highly complex prose work, is made up of different prose styles of the day. Österbottniske anekdoter, en efterskörd was published posthumously in 1920.