The Darkest Light (2000)

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.