The 15-year-old girl, who was with a group of teenagers taking part in a Duke of Edinburgh exercise, suffers from a neurological condition which affects her walking.A helicopter from Scotland airlifted her off the mountain in the area known as the Brandy Pad.Louis Edmondson, with the North West Mountain Rescue team, helped in the rescue effort.He said the conditions were bad due to the wet weather."She was shivering a lot; she was very frightened and couldn't really move one of her legs," he explained."We were tasked to try and get her off the hill somehow."A couple of us stayed with her and made sure she was okay. Another team was sent out from below, in the valley, to try and take her off by stretcher."In the meantime, Rescue 177, the helicopter from Prestwick over in Scotland arrived and airlifted her off to take her to her mum down in Newcastle."So it was a successful outcome and she was very happy to be getting off the hill."