She just looked decorative
Stewart Granger (May 6, 1913 – August 16, 1993).
Stewart Granger (born James Lablache Stewart) was a British film actor, mainly associated with heroic and romantic leading roles. He was a popular leading man from the 1940s to the early 1960s, rising to fame through his appearances in the Gainsborough melodramas.
Granger appears with Donna Reed in the film The Whole Truth (1958). A Variety review called the film "a routine effort which is unlikely to create outstanding interest." It also said Donna Reed had "little to do but look decorative."