Hi there....she sure is a sweet looking baby ! What do you feed her and how often ? I see pellets there, if you are using those in place of a feeding of insects [ they need insects at least 2 X a day for optimal growth ] then she will not get as much protein as she needs. Then again she may have been a runt....they can be healthy, too but smaller. Can you also list the exact type/brand of lights you have as well as picture of her tank ?
That's a nice set up. No , she is definitely not Rankin's. They top out at only 10-11" as adults and look much different, plus they don't get the orange tones. Rankin's are a specialty dragon and are not sold to stores wholesale [ they cost much more ] , there are VERY few breeders of them and when sold on line are labeled as Rankin's.
So how many crickets do you give her a day ? And is that MVB a 125 or 160 ?
She has a low appetite for some reason. Most babies will eat at least 20-40 insects per day [ and even more ]. If you haven't tested her for parasites, it might be good to do that. It's good to have an experienced reptile vet to check her out if needed.
You might also try Phoenix worms to see if she'll eat more. If she were eating larger amounts of insects she would grow faster. What is her length , about 8-10" ?
That might help, but don't use mealworms....it's tempting because they're cheap and lots of stores carry then but they are not very nutritious and they can cause impaction. See about getting Phoenix worms or silkworms, ordering in bulk is the cheapest way.