Natascha - Wettlauf mit dem Tod (1996)

When the seven-year-old daughter of an architect falls ill with a rare but curable form of cancer, the family wants to give the child the best possible treatment. Unfortunately, they decide against chemotherapy in favor of a gentle natural remedy. When the hospital doctors notice that the child's condition is deteriorating, the necessary race against time can only begin once the parents are convinced of the effectiveness of conventional therapy.

Unfortunately the movie Natascha - Wettlauf mit dem Tod is not yet available on HBO Max.