During the
Second World War in London, Trefusis participated in the broadcasting of
"La France Libre", which earned her a
Legion d'Honneur after the war; she was also made a Commander of the
Order of Merit of the Italian Republic. Trefusis received mixed reviews on her books. Some critics credited Trefusis with an "excellent gift of observation" and a "talent for mimicry and flair for decor in most of her books". These qualities were said to be evident in her novels written in English and in French. Other critics stated that her books were not great literature, although they sold well and her readers enjoyed them. She made many appearances as a pivotal character in other writers' fiction.
Nancy Mitford based Lady Montdore, a character in her novel
Love in a Cold Climate, on Trefusis. She featured in
Cyril Connolly's
The Rock Pool, in
Harold Acton's ''The Soul's Gymnasium'' as Muriel, in several novels by Vita Sackville-West, and in Virginia Woolf's
Orlando: A Biography as the ravishing "Princess Sasha". Although her writings spanned much of the twentieth century, many were unpublished.
Virago, a publishing house devoted to recovering the forgotten work of women writers, set about compensating for this. They brought out two of her novels with introductions by
Lorna Sage and
Lisa St Aubin de Teran, but were eventually defeated by
copyright difficulties. In addition, Lorna Sage, Trefusis' great champion among British critics, died before she could assist in the publication of further works by Trefusis, as she planned. ==Later life in France==