I figured it was Chris or John (ball python brothers) as Chris got the first shipment of gravids in on Dec. 23, 08.

The fact that she was imported in Dec. and I know his animals were collected in Benin as Ghana does not have gravids until later in the year (Generally mid. January) it sounds like she probable is not gravid. You said her belly is hard, the easiest way to tell a gravid is there skin is pulled down on there body from the eggs filling them out so much and you see the spine stick up on there backs when they are getting ready to lay.

If you have a pic of her we might be able to give you a better idea if she is gravid. Imports are a lot different looking when gravid than a animal bred in captivity as captive animals are usually fat so so not have the xtreme look that a thinner imported female has when packed with eggs.