The egg will absorb moisture from the substrate it is being incubated in, so that's good that it is filling out.

Try to check the female's calcium sacks if you can. But definitely give her some extra calcium for right now. You can leave it dry in a dish and/or mix it into her CGD as mentioned. Just don't overdo it--just a tiny bit added into the CGD should be enough. I actually like to use this: http://www.pangeareptile.com/store/r...escue-cal.html. With that product you cannot overdose her on calcium or vitamin D3 that might be added to calcium powder. You mix it up as a liquid and can give drops right out of a dropper for the gecko to lick off of its nose. You can also add it to their CGD. It is basically the same thing that you would get at a vet's office for a calcium deficient gecko.