Hi! I’m autistic and while I’ve never been officially diagnosed with ARFID, I had a very limited diet until I was about 19 and even now my diet is what most people would consider very narrow. Growing up I would only eat chicken nuggets, pasta with tomato sauce (the right kind!) and cheese, and the occasional roast dinner- if I was emotionally prepared. What made the biggest difference to me was the combination of my autism diagnosis, anxiety medication and, to be completely honest, peer pressure.
Now I’m certainly not suggesting peer pressure as a technique, but instead offering a little hope that things can get easier for your DD, especially if she gets the right diagnoses and support. Ultimately I had to come to the decision to try new things by myself, usually without company since I didn’t have to act out my reactions or pretend to like anything, but through several years of trying new things I have now come to accept some stir fry, instant noodles, pizza, some sandwiches, different roast dinners, burgers, chips, chicken skewers, several raw vegetables and some cooked- that’s just off the top of my head. Everything is less stressful in chain restaurants and buying from the same brands and supermarkets as often as possible, and every new thing I try is a cause for celebration between me and my therapist, but I’m making progress!
It sounds like your DD has fantastic support both at home and amongst her friends when it comes to living with ARFID, and I think that’s the real foundation necessary for making things easier over time. I hope your DD can thrive living with ARFID, either through slowly increasing her diet or continuing to find ways to accommodate the things she can eat now- whichever way and however she is happiest! You sound like a fantastic mother to her, too 😀