She became chairwoman upon her husband 's death .
Ilitch served as vice chairwoman and secretary - treasurer of all of her family 's various holdings until 1999 , when Ilitch Holdings , Inc. was formed as the parent company for her family 's widespread interests .
Ilitch became chairwoman upon Ilitch 's husband 's death .
Ilitch served as vice chairwoman and secretary - treasurer of all of her family 's various holdings until 1999 , when Ilitch Holdings , Inc. was formed as the parent company for her family 's widespread interests .