She next took on guest roles in the television sitcoms Step by Step and Home Improvement, and appeared in the brief part of Sil, a character played in adulthood by the actress Natasha Henstridge, in the 1995 science fiction film Species.
She had minor roles in the television films My Son is Innocent (1996) and Killing Mr.
She began her career at a young age with television guest appearances, and made her feature film debut in the family film Lassie (1994).
Penned by Tracy Letts, it is a black comedy about a dysfunctional family who kill their matriarch for insurance money; Williams was cast as the family's youngest daughter.
The production featured gruesome violence and required Williams to perform a nude scene.
Griffin (1997), and featured alongside Michelle Pfeiffer and Jessica Lange in the drama film A Thousand Acres (1997).
At 17, unhappy with the roles she was being offered, Williams collaborated with two other actresses to write a script named Blink, about prostitutes living in a Nevada brothel, which despite selling to a production company was never made.
The series was filmed in the small-town of Wilmington, North Carolina, where Williams relocated for the next six years; she preferred living there over Los Angeles.