I've been lucky with my kid, he has an actual wheat allergy besides the celiac gene and obvious intolerance. I don't know that the science would get through to him, but he's been exposed exactly once in 7 years and the belly pain was pretty memorable. He has other allergens that register the same severity that he eats on occasion because we've never seen any effect at all besides eating them too much will cause chicken skin or mild eczema. He's been really compliant for a kid that isn't generally compliant with anything unless there is a reason that makes sense *to him*.
At some point it has to be their choice. He's never felt weird about it until maybe the last year or so. It's an awkward age. He doesn't want to eat things that make him feel bad, he just wants to fit in. He's had anaphylactic episodes from cross contamination from nuts so it's a huge fear of his. He has severe anxiety. We've had to work hard to get to a place that he knows he can touch or be around and even eat some of his minor allergens after having anaphylaxis to something he isn't even allergic to.
Eating disorders are a real concern, and barring actual celiac I would err on the side of it being her choice.
Sent from my iPhone using Tapatalk