matron

noun6

1. •
   A mature or elderly woman, especially one of a higher social rank.

   • grave from her cradle, insomuch that she was a matron before she was a mother — 1655
2. •
   A woman in charge of the domestic arrangements of an establishment or institution, especially, the nursing officer or chief nurse of a hospital.
3. •
   A housekeeper, especially, a woman who manages the domestic economy of a public institution.
4. •
   A wife or a widow, especially, one who has borne children.
5. •
   (US) A female prison officer.
6. •
   A woman with the character of a mother or matriarch.