Guns N’ Roses legend Slash is experiencing profound heartache following the death of his stepdaughter, Lucy-Bleu Knight, at the age of 25. The guitarist, 59,  took to Instagram to express his deep grief over Knight’s loss on July 19, posting a touching message alongside her photo.

Slash wrote, “My heart is permanently fractured. I will never ever stop missing you and remembering what a beacon of happiness, laughter, creativity, and beauty you have always been. And still are.” Slash concluded, “The brightest light in the lives of so many who loved you so much. I find solace in the hope that you are at peace now. I will love you eternally.”