Duff also made several guest appearances in television shows, her first as a sick child in the medical drama Chicago Hope in March 2000. In a 2003 episode of George Lopez, she had a role as a makeup salesperson; she later reappeared in the show in 2005 as Kenzie, a feminist poet friend of the Character Carmen (Masiela Lusha). In 2003, she acted opposite her sister Haylie in American Dreams, while in 2005, she played a classmate and idolizer of the title character of Joan of Arcadia.

source:en.wikipedia.org