Cressida Bonas is grieving the loss of her sister, Pandora Cooper-Kay, who passed away on July 22 after a long 24-year battle with cancer. Pandora’s fight began years after she was diagnosed with an “inoperable brain tumor.”

A death notice described Pandora as “beloved daughter of the late Edmond Cooper-Key and Lady Mary Gaye Curzon, cherished mother of Bow and Nestor, deeply loved sister to her two brothers and eight sisters, and a devoted aunt to her nieces and nephews.”

Pandora had been open about her struggles, revealing how her family had prepared for her passing multiple times throughout her illness. Reflecting on her health and her privileged upbringing, Pandora once mused, “I wondered if it was because my parents were so rich. Maybe I got the money but not the life,” according to the Mirror.