Jessica Chastain is bravely opening up about her younger sister‘s suicide.

In a new interview, the 39-year-old actress revealed her sibling, Juliet Chastain, “had struggled a long time with drug abuse” prior to tragically ending her life in 2003.

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Jessica in January 2015.

“She had a lot of attempted suicides, but you never really think this is going to happen, even though, in your mind, you know it can happen,” Jessica recently told Modern Luxury Manhattan. “And when you get the call, it’s… shocking.”

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“[Juliet’s death] completely changed the person I am,” Jessica said in a previous interview. “A movie, Oscars, a dress, if someone thinks I’m stupid… I realized nothing is that important.”