Excuse my butting into your dialogue. I'm currently researching Australian and New Zealand musicians of the fin-de-siecle who came to Europe, and have just embarked on Alice Dudley/Marion Christie-Murray. So your exchanges are fascinating.
Alice/Marion is recorded in Who's Who In Music of 1913 as follows:
Christie-Murray, Marion, pianiste; b. New Zealand; d. of Walter Dudley and his wife (nee de Lacy Pera); e. at Victoria, Australia, and prepared for musical profession by Madame Tasca and Alfred Plumpton; m. the late David Christie Murray, author and journalist; made her debut in 1882 at Town Hall, Melbourne, as pianist; has frequently played in London, at Bechstein, Aeolian and Steinway Halls; director of British Women Artistes' Society, founded 1909, under the patronage of HM Queen Alexandra. Recreations: Reading and motoring. Address: c/o International Club, 22A Regent Street, s.w. Clubs: International, Austral, Arts and Dramatic. Telephone: 3808 Gerrard.
I'll let you know as more emerges. Was she ever married to David C-M?