The Darkest Light 2000 one on netflix

Farm life in the Yorkshire Dales isn’t easy at the best of times, but things are exceptionally tough for Tom and Sue. Their eight-year-old son has leukaemia, and the doctors aren’t making headway. Meanwhile, Catherine, ten, feels lonely and neglected; befriending Uma, the first Hindu at the village school, she takes her to the Moors. Something strange happens, which Catherine interprets as a vision of the Virgin Mary, and a sign her brother will be all right.