The only think fluoride in water does is prevent cavities. Richmond city water does have a bit more iron and hardness than I like and as a result I don’t love the taste and how it leaves residue on the fixtures, but I grew up on county water which is still fluoridated and from the river, but seems to be processed more to reduce the iron content and hardness.

I seriously doubt this is the cause of her ailments. Maybe it’s a change in diet, has she taken any antibiotics that might upset her gut bacteria, something like that?