Early photos of Girl Guides in Hong Kong?

If one exists, I should like to access a girl-guiding photo of my aunt, Evelyn Warren, https://gwulo.com/node/11558  if the Hong Kong Girl Guides have an archive of group photos. David posted a reference to her departure and Mrs Reed's from Hong Kong and their work with the Girl Guides in "The Report on Girl Guides 1922". Evelyn was the only daughter of my grandfather C.E. Warren and returned to Hong Kong to live with him for three years after leaving school in 1919.

The SCMP carried a full page notice advertising the centenary of the Hong Kong Girl Guides which I tore out when I was in Hong Kong in November 2016. I contacted them on the email address given but  didn't get a reply. I've tried again today, but if anyone has a contact in the current Girl Guides or knowledge of an archive. I'd be grateful to know. It's possible that they mounted an exhibition to mark their 100th anniversary.

Jill