underfed..... ?

[blackcrystal22]

Well there you go. You got her from petsmart, it's going to take awhile to get her nice and chubby.

Also, ball pythons don't need vitamins. That stuff is junk and that lady works at a pet store. If the pet store can trick people into buying things they don't need, they will.

Of course they do!
All animals need the vitamins and minerals that come from the food they eat. What you meant to say is that they don't need any vitamin supplements because they get everything they need from their food.

But yeah, what they are saying is correct. Any supplements are junk for snakes generally and they don't need UV because they eat whole animals.

Because it's a baby and from petsmart, it's likely fine. I'm just a bit worried about the coloration.. it could be the lighting, but if he does have a parasitical infection (which from petsmart, is possible) it would suck essential nutrients that help to keep the rich brown color in a bp.
If the color doesn't turn into a more 'chocolate' color and she seems to lose weight instead of gain any, you may want to get a smear done.
It's a good time to get a good gram scale too and keep track of the weight to make sure she is gaining weight like a healthy girl should.