Hi, it's not clear what the Salt think the issues is? Your dd doesn't chew because of what? In our case, ds (3.2) is very similar, still on 10 months baby jars, only eats 2 flavours, he eats porridge so I mix the fruit puree into it and that's it - finger feeds crisps, biscuits and sometimes toast.
He was seen by specialist Salt, she gave us some tips I can send you, she thinks it's food aversion and to go on trying to offer him new food - not working yet, he started smelling all food as well (before he would only touch to check the texture).
He was also seen by private OT, and she thought it is sensory, he only chews with his front teeth, she gave us some oro-facial exersizes to do, as it is apparently connected to his low muscle tone - the jaws and facial musles needs strenghtening. Blowing games good as well, but he can't do that yet...
So if you want, pm me your email and I will send you the stuff - not sure if NHS anywhere do the oro-facial exersizes as I have been asking about it and didn't get anywhere.
One good tip is, if she drools, don't wipe it away, but firmly dab, so she can feel it better. Does she have issues with textures - does she like playdough, grass, water etc?
I think regarding the formula, you will see what the dietician says, he will loook into all the food she is accepting and see how much nutrition she is getting.