Thomas de Cantimpré is the author of her Vita. He tells that Margherita lived piously with her mother and sisters, under the guidance of a Dominican friar, Zeger of Lille, from the age of 18 until her death in 1237. This confessor tried to stop her alms that she did for lepers. Her visions gained fame in all of Flanders. It is not known, however, if she was part of a beguinal community, attested hoever starting from 1240 (Simons, p. 44). She belongs to the ecstatic movement.