Glad to hear you are getting her Harrisons. You will be pleased at the changes, it's really a remarkable food. Just be sure she is in fact eating as converting to pellets is a crap shoot. Sometimes it works, sometimes not.
Everything in the Harrisons provides all the nutrients your sunny will need. But for variety, you can try the following.
Since Harrisons is organic, its best to go organic on the table foods you get for your sunny. (Its also better for you). But not everyone has access to or able to afford them. If you can't get the organic, go with frozen as most produce nowadays is 'treated' and exposed to numerous elements.
Things like grapes and apples, you can easily find organic or you can wash, peel and then rinse the fruit. That's what I do with Skittles.
You'll likely have to experiment with different table foods before you find out what she likes. But the best place to start is the dark green and orange "meaty" fruits and veggies like broccoli, spinach, carrots, sweet potatoes, papaya, mango and star fruit.
Skittles will only eat broccoli and sweet potatoes out of that batch. He really likes apples, grapes and strawberries. I have to be very careful with the broccoli and strawberries given there outer layers.
You may also want to try pasta, my Skittles goes bonkers for pasta. He thinks its the coolest thing since sliced bread. Something else he likes but I prefer to limit that given the yeast content.