There seems to have been strife within the family over ownership of the land that her mother inherited from Marguerite's father. Marguerite's brother Francois tried to set up an independent livelihood for his mother and sisters, apart from his step-father, who had become a lawyer and plaintant in the myriad lawsuits between the disputatious colonists. When Marguerite was twelve, her brother Francois was captured by the Iroquois. He was thought dead, but then letters came into the hands of the Jesuits, where Francois reported that he had been horribly tortured, lost several fingers, but was still alive. He was ransomed and returned to the family the next year.
At age 14 Marguerite was married to Jean Crevier, son of Christophe Riviere, a baker who had migrated from Rouen in 1639, probably on the same ship as Marie's mother. Jean was 21, and his father had died before the marriage.
The couple does not appear in the census of 1666. But a year later they were in Trois-Rivieres, where Marguerite delivered a son, Joseph, when she was 18. Some time later her husband, like Marguerite's brother, was arrested for trading furs illegally - in Jean's case with the Indians at Cap-de-la-Madeleine. Evidently he prospered well enough in the trade - he bought the Saint-Francois-du-Lac seigneury from his brother-in-law Pierre Boucher in 1673. This made the Creviers landowners, with tenant farmers, part of the 'aristocratic' strata of New France. By 26 October 1678 Jean was one of twenty settlers prominent enough to be called to Quebec by the governor to discuss the prohibition of selling alcohol to the indigenous people. Jean was against the law, believing the Indian's criminal behaviour to be due to their intrinsic savageness rather than the booze.
Over these years Marguerite delivered three sons and two daughters who were known to have lived to adulthood. In the 1681 census the family is listed as follows:
Jean Crevier 37 ; Marguerite Hertel, sa femme, 32 ; enfant : Joseph 14, Louis 12, Rene 2 ; domestiques : Marie Pinard 17, Francoise 8, Mathurin 30, Jacques Griau 18, Antoine Devaux 39 ; 6 fusils ; 20 betes a cornes ; 40 arpents en valeur
Her son Louis was killed 27 March 1690 during the expedition led by her brother Francois against Salmon Falls, New Hampshire.
Her husband Jean was kidnapped by the Iroquois during a raid against Saint-Francois in August 1693. They tortured him grievously and threatened to burn him alive, but he was ransomed for 50 livres by the commander of the fort at Albany, Peter Schuyler. Although returned to European custody, he died shortly after from the wounds from the torture. Marguerite was widowed at age 44. Under the law of New France she inherited Jean's properties. Presumably she, with her sons, were able to prosper over the following years.
On 23 August 1700 it was recorded that Marugerite and her son Joseph gave part of their seigneury to the Abenaki and the Sokoki Indians. Here the Jesuits moved their mission for these groups. This settlement, and Sant Francois itself, would come under repeated attack in the religious wars of the 18th Century. But this was after Marguerite's time. She passed away at age 62 in 1711.
Marguerite, her offspring, and her female descendents had the following mitochondrial DNA characteristics: