O'Mara continued to make television appearances throughout the 1990s, including "Cluedo" (1990), and playing Jackie Stone (Patsy's older sister) in two episodes of "Absolutely Fabulous" (1995–2003). In 2001, she had a recurring role in the ITV prison drama series "Bad Girls" before appearing in the short-lived revival of the soap opera "Crossroads". She continued to perform on stage and in March 2008 she played Marlene Dietrich in a stage play entitled "Lunch with Marlene". From August to November 2008, she played Mrs Cheveley in Oscar Wilde's stage play "An Ideal Husband" directed by Peter Hall and produced by Bill Kenwright. She performed in radio and audio plays. In 2000 she reprised her role as the Rani in the BBV audio play "The Rani Reaps the Whirlwind", and in 2006 she made a guest appearance in the radio comedy series "Nebulous".