Identical Cardiff twin dies weeks after setting up leukaemia fundraiser

A 24-year-old woman has died just weeks after beginning fundraising for life-saving leukaemia treatment.

Caitlin Leggett’s shock acute myeloid leukaemia diagnosis in April 2025 led to the discovery that she and her sister Grace were actually identical twins rather than fraternal, at a time when Caitlin urgently needed a stem cell transplant.

Following months of chemotherapy and a stem cell transplant in December 2025, Caitlin achieved complete remission – but in May 2026, doctors found the cancer had returned and she was told she had six months to live.

“We’re only 24 – nobody expects this to happen… Being twins as well, you’re not supposed to have one twin not be there,” said her twin Grace.

Her family decided to pursue potentially curative treatment abroad, and a GoFundMe was launched on 2 June, raising more than £100,000 towards her treatment by 10 June.

But on Saturday June 13, Caitlin experienced a sudden, serious brain bleed, followed by a series of strokes, and her health rapidly declined.

She died two days later, surrounded by Grace, along with her brother Ethan, 27, sister Neve, 19, and her parents Jennifer, 54, and Ian, 57.

“It was really hard,” Grace said.

“We all got the chance to speak to her. Neve put her favourite pillow spray on, we massaged her hands with lotion, and the nurses gave us a memory box with special paper and a charcoal wipe, so we could take her footprints and hand prints.”