Richards' acting career started while attending the Dublin drama league and she was asked at short notice to replace
Eileen Crowe in
Juno and the Paycock, playing the role of Mary Boyle in the
Abbey Theatre production. Richards got the role of Nora Clithero in the 1926 production of
The Plough and the Stars,
O'Casey's next production. This role meant that she ended up with police protection for the duration of the run due to the disturbances the play engendered. Another important role was to take on playing the lead in
The Player Queen by Yeats.
Maire O'Neill had previously made the role her own, Yeats had let no one perform the part since then so taking on such a challenge was intimidating. Richards continued to take on leading roles with the Abbey Theatre but in 1926 she also began to direct. On 28 December 1928 Richard married playwright
Denis Johnston in St Anne's Church in Dublin. She toured the US with the Abbey players in 1932 and with the Irish Players in the mid 30s. A role in 1938 in
Molly Keane's
Spring Meeting starring
Gladys Cooper and
A. E. Matthews took her to Broadway in New York. War in Europe broke out while the run was still going on and Richards was advised to stay in the
United States. However by then she had two children, producer Micheal and novelist
Jennifer Johnston. So Richards returned to Dublin. There she ran her own theater company at the
Olympia Theatre, Dublin with
Nigel Heseltine. Her marriage to Johnston, broken in 1938, ended with divorce in February 1945. Richards' next challenges was to take over the
Abbey School of Acting. During her time there one of the designers she worked with was
Louis le Brocquy. With
Siobhan McKenna she produced
The Playboy of the Western World in Edinburgh to huge success allowing her to stage it in London and Dublin and later in Toronto's Library Theater. She brought
Marcel Marceau to Dublin for the first time. She continued to act and had some film roles. ==Television career==