Normal size/weight?

So, I bought a new ball python online and got it Tuesday ( it's Sunday now )

And, she was born in April '11, and it's obviously September '11 now.

My concern is that she's under weight? She's 21'' long, and 120 grams.

She is a dinker, but, is this normal weight and size for 5 months?

She eats really good though.

Are you able to post a pic??? i use (tinypic.com to upload)

While waiting for a pic....

What were it's previous owners feeding it? What do you plan on feeding it?

You say she is a good eater: was she a good eater for her previous owners? What feeding schedule do you have her on now?

Does her body have a triangle appearance or is she filled out and pudgy?

BTW, her being a dinker doesn't have anything to do with her weight :)

Hopefully we can help you out when we get the pics. Some are just slower growers than others and some grow in big spurts/steadily.