Babylon 5 dealt with a similar matter. An Alien family had a son with a breathing problem that was killing him. The Doctor could fix it with a simple operation, however, the family's Religion didn't allow cutting/surgery, and so they refused to allow the Surgery. The Doctor went to the Commanding Officer to ask for permission to do the surgery, the Commander ordered him not to do the surgery unless the family agreed. The Doctor did the surgery anyways and the boy was fine. But, the family believed he was no longer pure and they killed him
And should have been sentenced to whatever the maximum penalty for murder in that universe is.'
The doctor did the right thing, saving a life. It was the twisted, sick beliefs of the parents that killed the child.