You could try meadow or blue grass. If you can get some green hay or grass, that might work, but introduce it slowly. But she might be interested in a really good quality hay. If you're buying it in small bags at the pet store, that's the oldest, driest hay on the market. American Diner, Small Pet Select, and Oxbow all usually have good fresh hay that you can order online. Just be aware that last year was a terrible year for hay all over the country, so the quality may vary from any of those places.
There's a thing called hydration hay, which is dried hay that can be soaked in water to sort of reconstitute it. But you have to be very careful with it. You only soak a small amount at a time, and it has to be removed from the cage after two or three hours so that it won't mold. You can probably get it at any feed store.
You can also decrease the amount of veggies you're giving her, so that she's hungry enough to eat the hay. Don't take her completely off of them all at once. But cut way back on them. Give her just a very small amount to get her eating, and then leave her with nothing but hay in her cage.