Grau supervised the script of the 1967
crime film Point Blank, which revolves around a man named Walker (played by
Lee Marvin) who sets out to find his friend who betrayed him during a robbery that they performed together and left with all the money for himself. Grau was also the script supervisor of the 1976 remake of
King Kong. She then supervised the scripts of the films
The Champ (1979),
The Frisco Kid (1979),
The Hunter (1980),
The Pursuit of D. B. Cooper (1981),
Caveman (1981),
Clue (1985),
Marie (1985), and
No Way Out (1987). In the 1980s, she also supervised scripts of the television show
Coward of the County (1982) and the television films
The Shadow Riders (1983), ''Missing Children: A Mother's Story
(1983), Kenny Rogers as The Gambler: The Adventure Continues (1984), Velvet
(1984), and My Wicked, Wicked Ways: The Legend of Errol Flynn'' (1985). Grau worked as a script supervisor on
Fox Broadcasting Company's
The Tracey Ullman Show (1987–1990), a variety show that featured among many things the first appearance of the fictional animated
Simpson family. Grau also voiced some characters in
The Simpsons. She is best known for lending her voice to
Lunchlady Doris, who speaks with a "gruff voice" according to
The Journal Gazette editor Dean Robinson. In 1992, Grau appeared in the supporting role of Hattie Rifkin in the film
The Distinguished Gentleman. According to Philip Wuntch, film critic for
The Dallas Morning News, Grau "has only a few lines as a senior citizen with old-time political savvy, but she makes every vocal inflection count."
The Patriot-News Sharon Johnson called her "a delight as the feisty senior citizens' lobbyist who first recognizes Johnson as a winner." Grau worked as a script supervisor on the sitcom
Good Advice in 1993, and played characters in the sitcoms
Phenom and
The George Carlin Show in 1994. ==Death==