In 1948 Evans returned to the film studios after an absence of more than thirty years. At the instigation of Emlyn Williams she appeared in The Last Days of Dolwyn. The cast included Williams, Richard Burton, in his first film, and Allan Aynesworth, who had created the role of Algernon in The Importance of Being Earnest in 1895. This was Aynesworth's last film; Evans went on to make eighteen more over the next three decades. She played an elderly Welsh woman, and was well received by reviewers, although one wondered if she was yet quite at home before the camera: "there are indeed moments when she looks as disproportionate as a life-size Rembrandt in a one-room flatlet. But it is not, of course, the flatlet which stays in the memory". In the same year she played Countess Ranevskaya in Thorold Dickinson's film version of The Queen of Spades.
In the theatre, Evans returned to The Way of the World in 1948, exchanging the role of Millamant for that of the formidable old Lady Wishfort. The production received mixed notices, and Evans's Wishfort – "like a preposterous caricature of Queen Elizabeth" – though much admired, overshadowed the rest of the cast. In November of the same year she made one of her rare appearances in Chekhov, as Ranevskaya in The Cherry Orchard. Her performance divided opinion: in The Observer Ivor Brown wrote of "the glorious impact of an authentic genius at the highest level of world-theatre", but the anonymous reviewer in The Times thought that she "remains, a little mysteriously, outside of the character".