A 24-year-old twin given just six months to live after her leukaemia came back is attempting to raise £500,000 for potentially life-saving treatment abroad, saying the prospect of leaving her identical sister behind is "unthinkable". Caitlin Leggett, from Cardiff, was diagnosed with acute myeloid leukaemia – an aggressive cancer of the white blood cells – in April 2025, with a persistent rash being the only indication that something was seriously wrong. Following months of chemotherapy and a