According to an urban legend, which actress', (fictitious), performance as the titular character in a stage production of The Diary of Anne Frank was so horrendous that audience members allegedly yelled "She's in the attic!" when the Nazi soldiers came onstage?
Hints, (from her wikipedia stub):
She made her feature film debut at age 10 in what is generally considered to be one of the worst movies of all-time.
in 1981 she won a Golden Globe Award as New Star of the Year while simultaneously winning the Golden Raspberry Award for Worst Actress and the Worst New Star for the same performance.
She was nominated for a Grammy in 1984.
In 2000, she was nominated at the 20th Golden Raspberry Awards as Worst Actress of the Century, ultimately losing to Madonna.
Answered correctly by Valcazar.