The father of a 10-year-old girl diagnosed with a terminal condition is organising a gruelling 48-hour challenge to raise money to help adapt their house for her needs. Nick Passey and his wife Naomi, from Over, were devastated to discover three years ago that their daughter was suffering from a rare degenerative disorder that has already left her almost blind. Now he is taking on sponsored challenges to help make her life more comfortable – including two marathons this month – and he is about to embark on the most difficult event yet. Nick says: “When Caitlin received her diagnosis at age sev…