The 17-year-old Hinchingbrooke School sixth-former, of Byron Close, Huntingdon, is raising money for the Make a Wish Foundation, which grants wishes to youngsters with life-threatening illnesses. Libby, studying psychology, English and philosophy A-levels, came up with the idea for a fundraiser while considering her options for university. It made me realise that while Im ­worrying about having a future I should be grateful I have a future to worry about, she said. The Make a Wish Foundation supports children who dont have a future. Mum Sherry had set her daughter 18 challenges to complete before she turns 18, and doing an extreme sport was one. She said: Im scared of heights and a bit reluctant to go on rollercoasters so its a challenge for me as well. Libby, who has a sister, Alanna, 13, and two stepbrothers, Daniel, 14, and Rooney, nine, is doing the jump at Sibson Airfield, near Peterborough in February. She hopes to raise £1,500 and by last week had already topped £1,200. Im overwhelmed by how generous people have been, she said. INFORMATION: To support Libby, visit www.justgiving.com/Libby-Moor.