I think we're slightly talking at cross purposes here. She does eat non 'healthy' things, but it's not where her calories are mainly coming from. And sugar isn't good for any of us, we know that, I especially do since I really crave it more than savoury things.
It wasn't actually the nutritionist who said the thing about anorexics sometimes developing a sugar addition, it was a therapist and I remembered it just because it is exactly what happened in my small sample of relatives with ED. Doesn't mean it's common or likely, but they said it happens and I've seen it happen.
As I say, I'd love for her to put on weight however it most easily happened. However, I don't have an issue with a healthy diet in general and, for her, I think will be most sustainable long term. The rapid weight gain in lockdown that triggered the ED was caused by bored eating of family packs of Dairy Milk etc. I don't want her freaking out again.
We are chipping away at fear foods - she's had a pecan iced thingie from Starbucks today, we've got a family lunch tomorrow where she'll have a dessert etc.
God I sound really defensive!