Sometimes it is a struggle with veggies.
But I truly believe they can really learn to lov them !
Birds learn so much from their flock, and if solo that's us
So making a yummy salad , and a bowl for you and one fir her and eat together.
I find they do better exploring new foods out of cage. I have a flat top. So it's easy to set out a plate or tray with a bunch of stuff, cut up , chunks , shredded and wedges it even while goodies. And ket them come and find in their own . Expect waste
don't give up!
Everyone here has heard me say hundred times , that my quaker Penny took 2 years to start eating romaine lettuce!!! Honest to goodness it's one of her favorites now!
They more shape, textures and things you can get her to try , the better and better she will get at trying! Offer a little boiled or scrambled egg, a little tiny amount oatmeal, quinoa. Anything you make that fit you thst is parrot safe give her a taste. My vet says it's ij if you had a little cooked onion or garlic in what you made as long as you try not to give the those pieces.
I start off handing them things I think that most parrot's like . Dint chase good it if comes to get ysy if not just drop on cage top. I offer popcorn, seed, but, crumbs of while grain bread, once they get the idea things I offer are food, I start handing out a pea, a piece of corn, a green bean or dnsp pea, then any veggies.
Stuff veg chunks in cage bar's, if nothing else they can be something to rip up.
Good luck !