Grey described her as a lifelong activist, "fiercely attuned to right and wrong."
Grey concluded her post with gratitude: "She was brave and deep. I love you, Mom.
Thank you for showing me how to do it all, even this, with grace."
Outpouring of Support
Many entertainment figures offered condolences, including Debra Messing, Julianne Moore, Abby Lee Miller, and Erika Eleniak. Tracy Pollan shared a personal message, recalling Wilder's warmth and guidance.
Lea Thompson called Wilder "the best," and Holly Robinson Peete sent love.
Grey had previously shared updates about her mother, including a Mother's Day post in 2023 and a birthday celebration in 2024.
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Wilder is survived by her daughter Jennifer Grey and son James Grey, whom she shared with former husband, actor Joel Grey.