Thanks for the clarification
Ok the UV is a proper distance so that's good.
How big are the crickets in comparison to her? Smaller than the space between her eyes?
She's eating a decent amount, it could be more though. Is that as much as she wants to eat or are you limiting her to 10-15?
Great that she is active too, that is a good sign she isn't sick or anything.
Some dragons just grow slower than others. And other times they grow in spurts as opposed to linear progression. As long as she is eating healthy, and acting healthy, I wouldn't be too concerned. Especially since your setup sounds fine.
But if she is able to eat more, she should start to grow a bit more too.
-Brandon