Rambin started her career at age of 13 , as a series regular on ABC 's '' All My Children '' from 2004 to 2008 , playing the role of Lily Montgomery , the autistic daughter of Jackson Montgomery , played by Walt Willey . It was announced that Rambin had been cast in another role on '' All My Children '' , playing the street-smart but lovable older half sister of Lily Montgomery , Ava Benton , where the role only lasted for two consecutive years . Rambin was the only actress from '' All My Children '' to be nominated for the 33rd Annual Daytime Awards and 34th Annual Daytime Emmy Awards . She was nominated for Outstanding Younger Actress in a Drama Series for her roles of Lily Montgomery and Ava Benton . She later appeared on an episode of '' Law & Order : Special Victims Unit ''
34th Annual Daytime Emmy Awards
34th Daytime Emmy Awards
Leven Rambin