I Agree!

you need basking temps at least 110-120f and ambient temps 80-90f during the day.. at night normal room temp is fine..

And do not forcefeed!
in this case and this stage its ok to try some super worms pizza cat/dog food banana friuts in general (something that tastes good for humans also like pizza or burgers) just to get her to start eating again!... but as soon as she eats everything you feed her like this for a week.. you must go back to 100% veggies/friuts

and leave it alone! dont stress it... just feed it and take it to the bathtub.. other than that it should be isolated from sights and sounds.. from kids and other pets...

Good luck! and btw most vets dont know a thing about how to save an iguana.. i would say 90% of vets dont have a clue in practise!