jacquline
♥Mary Ruth Is Florence Griffith Joyner's Daughter!♥
Her name was Florence Griffith-Joyner and she was Jackie's sister in law.
They were sister-in-laws. Florence was married to Jackie's brother, Al.
sister in law
Florence Nightingale's sister was named Parthenope Nightingale.
Your brother would call your husbands sister by her first name. Or, "my (sibling's) sister in law.
Your Sister-in-law
This outstanding retired athlete is alive and well. The questioner is possibly confusing her with her sister in law, Florence Griffith-Joyner who died on 21 September 1998
you call her your daughter's husband's sister
Florence Nightingale's sister was Frances Parthenope. Frances was a year older than her sister Florence. Both were named after the place of their birth.
OLDER!
Mom