It is very stressful. Try and give her as much control as possible. Chat about the effects of Arfid. Ask her if there are textures she likes or can't stand - such as soft (ice cream, smooth humous or guac etc) Crisp - like crisps, crackers, tortilla chips, crunchy like nuts, carrot sticks etc. Sludgy like mashed potato, thick smoothie, weetabix in milk, porridge; chewy like gummy sweets or toffees, some beef or chicken.
If there are textures she can tolerate, give her tiny sample pots of different things with that texture - ask her to taste them and judge them out of 10 for taste, texture, nutritional value etc and see if she can become more in charge of her own nutrition.
We learned never to dismiss food for low nutritional value when DS was at this stage. If all he would eat was soft ice cream and corn chips, that was absolutely fine, because it got some calories into him and also encouraged enjoyment of food, which is vital, long term.
I don't know if your daughter is the same, but DS was far more prepared to try new things in restaurants than at home. Far more likely to try a new burger or pizza topping. Once he had some food he liked outside home, I tried to replicate it at home, first using shop bought sauces as he liked synthetic flavours and gradually swapping these for home made fresh produce.