From "Natchitoches 1729-1803" by Mills:
#9 Jean Baptiste Brevel & Anne were married 27 July 1736
#41 Baptism of Anne, adult female indian of Jean Baptiste Brevel (16 Jun 1736)
#773 Burial of Jean Baptiste Brevel, a native of Paris, about seventy years (25 Jan 1754)
No death for Anne is listed since they were living in the Caddo nation. Jean Baptiste brought his children back to Natchitoches after her death and thier daughter married 18 Jun 1754. Entry #732 is her marriage and says her parents are both deceased.
Please let me know how you tie into this family, and possibly the first few generations. I may be able to supply you with more information.