Forster attended Dynevor School and was awarded the Mary Ewart Scholarship for English in 1915, enabling her to study at Somerville College, Oxford for three years.
One of her contemporaries, and a friend for the rest of her life, was Margaret Kennedy, author of the 1924 novel The Constant Nymph, who died at Forster's house in Adderbury, Oxfordshire, in 1967.
[1] She also came across an older student from Rhydcymerau, Carmarthenshire, David John Williams and there was friendship and correspondence between the two until 1925.
[2] In her correspondence with DJ Williams they discuss the literature of the day and school syllabi.
She donated a portrait of Henry Griswold Lewis by John Constable to Somerville College.