In this Act a reference to a member of a complainant's family means-

(a) in the case of a person belonging to a family based on the paternal system-mother, father, wife, son, daughter, brother, sister, father's brother, father's father, father's brother's son, and brother's son;

(b) in the case of a person belonging to a family based on the maternal system-mother, father, wife, son, daughter, brother, sister, mother's mother, mother's brother, mother's sister, sister's son, sister's daughter, mother's sister's son and mother's sister's daughter".