April 22 (UPI) -- Sophie Nyweide, a former child actress who starred in Noah and Margot at the Wedding, has died at the age of 24, according to an obituary published online.

Former child star, Sophie Nyweide, best known for portraying Michelle Williams' on-screen daughter in the 2009 film Mammoth, has died at age 24.

Actor Sophie Nyweide died on April 14, her family's obituary confirmed. Her family wrote that she self-medicated and refused to take medical help.

American actress Sophie Nyweide, who is best known for starring in the 2009 movie Mammoth alongside Michelle Williams, has died at the age of 24, her family have confirmed