In the tradition that I grew up in (Roman Catholic) healing by faith was acquired by quiet prayer or pilgrimage. Despite its rather subdued character it had a rather splendid reputation. This was not supported by equally splendid facts. The world renowned place of Lourdes for example has only produced 67 ‘miracles‘ since 1858. That’s 0.4467 miracles a year. With an average number of visitors of eight million per year, that’s only a 0.0000056% success rate.
Where healing by faith is a more extrovert and splendid phenomenon, results are equally impressive, albeit less wanted. A first case should have been enough, but no a second case came along and even a third case. Someone should implement laws that deprive parents like these of their parental rights.