Mrs. Ko passed away on June 22, 2009 in Hong Kong. Click here to see the notice of memorial service.
Mrs. Ko taught at Wah Yan Kowloon from 1945 to 1975. She was fondly referred to as the Fat Madam by her pupils. 高太貴從容, remarked by one of them. Our condolences go to members of her family, all boys being Wah Yan alumni.
Here is the letter of condolence from Philip Lee.