Country Dance (serialized on BBC radio in 2006) was followed by three further novels, The Wooden Doctor (1933), Turf or Stone (1934), and Creed (1936), all set in the countryside of the Welsh Marches.
Whistler married George Michael Mendus Williams, a Welshman, on 28 October 1940, and they went to live on a farm at Llangarron, near Ross, where her husband worked.
She also published Poems from Obscurity (1947) and a volume of stories, The Old and the Young (1948), written while her husband was serving in the army.
The couple moved in 1953 with their daughter Cassandra (born 1951) to Hartfield in Sussex, where her husband began teaching.
A second volume of poetry, A Candle Ahead (1956), won a prize from the Welsh committee of the Arts Council a few weeks before she died on 17 March 1958 in Tunbridge Wells, Kent.