A nonprofit that advocates for abused and neglected children must say goodbye to its director after more than six years, though the person named interim director is already familiar with the group. Janet Walden, who has been the executive director of Court Appointed Special Advocate, or CASA, of Forsyth County for six and a half years accepted the same position for the Hall-Dawson County program, she announced Thursday. Walden's last day will be today, and she said she is glad she is staying in the CASA network.