Its unlikely that you'll find a chop recipe that she 100% likes straight away. Sometimes you just have to stick with it and be persistent. The whole idea behind chop is to try and get them to eat a variation of different vegetables and sneak in stuff that they perhaps would usually turn their beaks up at. Vegetables containing beta carotene such as carrots, butternut squash, sweet potato etc are important as their bodies convert the beta carotene to vitamin A which birds are often deficient in when not fed on the right diet. I always include several of these types of vegetables. Then you should try and include vegetables that contain calcium as that is another common nutritional deficiency in parrots so you'd be looking to add dark leafy greens like kale, chard, broccoli etc. There's no hard and fast rule though for making chop.
https://docs.google.com/document/d/1GrUHW8KaHL2bxudBQInyXzKGnPUfv9JWxL830W1u2l0/edit?usp=drivesdk
This was one of the documents I used when I first started making chop as its quite a good place to start. I freeze my chop and usually make a couple of different batches that i alternate between whilst also adding some fresh veg from the fridge just for variation. You can also try sprouting seeds and theres some great resources on here that will help you with that