[10] Between 1991 and 1992 she served as chair[6] and was one of the two women appointed to the 13-member CARICOM commission charged with evaluating regional integration.[2] Mason left the family court in 1992[6] to serve as an ambassador to Venezuela and was the first woman magistrate from Barbados to serve in that position. Upon her return to Barbados[8] in 1994 she was appointed as Chief Magistrate for Barbados and then in 1997 became the Registrar of the Supreme Court.[11]