Ellinor Catherine Cunningham van Someren lived in Kenya. Image is Public Domain in Kenya since Kenya only awards 50 years protection, so up to 1972. Image shows her middle aged, not elderly, so taken 1955 - 1965. Hence

This work was first published in Kenya and is now in the public domain because its copyright protection has expired by virtue of the The Copyright Act 2001 (details). The work meets one of the following criteria: It is an anonymous or pseudonymous work and 50 years have passed since the date of its publication It is an audiovisual, photographic work or a broadcast, and 50 years have passed since the date of its publication It is a sound recording, and 50 years have passed since the date of its creation It is literary, musical or artistic  work created pursuant to a commission from the government, and 50 years have passed since the date of its publication It is literary, musical or artistic  work, and 50 years have passed since the year of death of the author (or last-surviving author)

is appropriate.