The absolute only idea I can come up with is to tell her she is free to do whatever she wants to for her own health, but, until she can provide accredited documentation that the chiro way is better that what the AMA says for real medical care, that will be the way we go with the baby.
That, at the very least, should buy you some time, until she gets bored with it, or it doesn't work.
Raw sugar, that is that turbinado stuff, right? If so, I like it on top of muffins. Makes em pretty and crunchy sugary on the top.