Looking for Cluff of New Zealand

Hi i am looking for any information & photo's of my Great Grandmother DOROTHY CLUFF.
She went to Waihi Convent school in Tokaanu. Her mother was a teacher at the same school.
The info I recieved was she was between 16/19 years of age. She went to school in the 1900"s
Any info would be greatly recieved.
The other info I recieved was that they are from STERLING IN SCOTLAND.
My great grandmothers father had a connection in ODLINS TIMBER COMPANY IN PETONE WELLINGTON.