12/19/05 Agency One of Largest Corporations Headed by a Woman The Providence Business News reports that Family Service of Rhode Island is the second largest organization, for-profit and non-profit, in Rhode Island headed by a woman.  Margaret Holland McDuff is the agency's CEO.  Women & Infants Hospital is number one, and the Visiting Nurse Service of Greater Rhode Island is number three, according to the paper's research. The rankings were by number of employees and were published in the paper's December 19-25 edition.