Betty Cosby was born and raised in Charleston, South Carolina, where she attended business school. Following business school, Betty worked as a legal secretary for Charles Gibson, an attorney and member of the House of Representatives. From 1985 to 1991, Betty worked in the Legal Department at South Carolina National Bank. At SCN Bank, Betty served as the Administrative Assistant to three attorneys who handled corporate matters, credit card matters, and litigation for the bank. In 1991, Betty was appointed executive secretary to the Honorable L. Henry McKellar with whom she worked until 2002 when she joined the Strom Law Firm, L.L.C. Betty Cosby currently assists attorneys with both civil and criminal matters including complex litigation and state and federal criminal defense.