Is the vet wrong??

I need input. Blueberry was at the vet today, my air conditioner is not working on my car so I took her to a local exotics vet versus the one I would have liked to take her to. They put her on Batryl which I was expecting. I do lots of chin reading. NOW... this vet handed me an outline of a diet that she recommends for Chinchillas. Trying to make this as short as possible, she recommends 1/4 to 1/2 cup a day of fresh greens.....( Romaine, Collard, Escarole, Kale, Endive, Dandelion, Parsley) and up to one teaspoon per day of fresh fruit/nuts/seeds (the list for that is long) and NO shreddies, plain cheerios, dried fruits. This going against EVERYTHING I have been believing as a correct diet for her. Please help. Is this vet crazy, or am I?