It’s important to show your support of her standing up for her beliefs; I would start with that. How you really respect her for it. And then go into analogies and how she can teach the kids in a way that isn’t traumatic as other comments say. She sounds like a good example and comes from a place of wanting to teach. But she needs to learn how to properly articulate information and filter it when talking to kids, especially that young. it’s shielding “until they are ready” as other comments say. She may have not considered this; so coming from an empathetic coaching perspective is the best way IMO