Harrower went on to find success in television, including ten appearances on Dennis the Menace (mostly as Dennis' teacher, Miss Perkins), four appearances on Perry Mason (The Case of the Waylaid Wolf, The Case of the Lurid Letter), and two appearances on Gunsmoke as Mrs. O'Roarke, among many other shows up until 1974.
In the late 1970s, she served as head writer for the daytime soap opera Days of Our Lives, where her daughter Susan was a cast member. She also wrote for The Young and the Restless[2] in the 1980s and early 1990s. Her last writing stint was on the short-lived soap Generations in 1991. In 2003, Harrower received rave reviews for her performance as a drunken con artist on The Young and the Restless.
In 1942, Harrower married Harry Seabold, an Air Force cadet she had met in fifth grade. Their daughter, actress Susan Seaforth Hayes, was born in 1943. The marriage ended in divorce. For many years, she and her daughter lived in the Alvarado Terrace Historic District of Los Angeles, where she was active with the Pico-Union community redevelopment project advisory committee.[citation needed]