Because La Framboise spoke several regional Native American languages, in addition to French and English, and had a strong network among the Native Americans, she continued to be successful, even in competition with John Jacob Astor's American Fur Company monopoly. About 1818 she became an affiliate of his, and finally sold out in 1822 to his American Fur Company. Rix Robinson, a Michigan pioneer, purchased her business. La Framboise, then 41 years old and a very wealthy woman, retired to a stately home on Mackinac Island. Her son-in-law Captain Benjamin Pierce, commandant of Fort Mackinac, had overseen its construction.