Reminds me of another case with Christian Science parents. They refused to allow their son to be treated for flu. Instead, they insisted that prayer and 'God's will' would be enough. Once the child died they were charged with neglect resulting in death. The judge ruled that allowing the child to die with something so easily treatable over God and religion was equivalent to human sacrifice.
This case is similar in the sense that the parents were willing to allow the child to die over their obviously fanatical and unhealthy fixation with vegetarianism.
BTW, recently saw a film of a deer eating meat from a carcass. Cows have been known to eat meat. Monkeys are hunters and eat meat. The point is that many animals currently classified as herbivores are in fact omnivores. Just as cats are entirely carnivorous and will die without meat, but they occasionally eat grass to fill a specific need they have. Animals run on instinct. When their body tells them that they are lacking a certain vitamin, protein, or mineral, they will eat dirt, grass, meat, whatever they need to fill that need.
I don't think vegetarians understand or respect how nature works. They have an inaccurate fixated perception which is not based on reality. Of course, Liberals are like that with most things in life. If reality conflicts with what they believe to be true, then they simply discard reality in favor of what they 'want' to be true.