Balk attracted attention in her first somewhat adult role as the virginal Cecile de Volanges promised in marriage to someone 30 years her senior in Milos Forman's "Valmont" (1989). She turned in an outstanding performance as a young rape victim in the TV film "Shame" (Lifetime, 1992) and played the blossoming younger sister of Ione Skye in Allison Anders' indie favorite "Gas Food Lodging" (1992). Balk portrayed the older daughter who inadvertently becomes head of the household when the latest scheme of her father (Harvey Keitel) turns sour in "Imaginary Crimes" (1994) and was extremely sympathetic as a self-destructive prostitute in the little-seen "Things to Do in Denver When You're Dead" (1995). She continued to work steadily in features of varying quality, including playing a high school student caught up in the dark side of witchcraft in the hit supernatural thriller "The Craft" (1996) and co-starred with Edward Norton and Edward Furlong in Tony Kaye's "American History X" (1998), about a white supremacist who reforms.