She's really pretty! She'll probably be playing catch up for quite a while, but once she's a several years old, you probably won't be able to tell the difference between her and any other snake her age.
One of my snakes is a 2012, and he was quite small for his age when I got him. He is still a ways behind my other two 2012s at 150 grams, compared to their 220 and 270. I got him in November of 2012 (so he should have been around 4 or 5 months old) and he was only 10 grams.
Well at least it seems like she's a good eater, so that's not why she's so small.