We've got one just like her, but ours is almost 5 years old, and the only way we can get him to eat any greens is to try to slip a leaf in his mouth while he's chewing on a bug (just like yours). They're all different, but at least yours still has some time to learn to like veggies before she develops a lifelong habit of being a strict carnivore like ours seems to have done, not for lack of effort on the part of his human slaves. We put a salad in his terrarium every day, but he ignores it 99.9% of the time.
They do go after movement so some people wad greens up into little balls or wormy shapes and roll them around to try to get the beardie interested, so that might be worth a try, although I think our beardie has already figured out that if it's green, it's not going to taste like a bug.
If it's any consolation, our beardie has managed to stay reasonably healthy for at least the last couple of years on a diet of mostly bugs and hardly any veggies, and has even survived adenovirus, so it probably won't be the end of the world if yours never learns to like veggies a whole lot. At least she likes squash. :roll: