either she was with a male before you got her and she retained sperm or it is a partho clutch; which is not very common but I have heard of a lot more of them in the last couple years. She does not have to wrap the eggs to have them hatch out, set them up on some damp Sphagnum moss and cover them with a small tub over a heat pad fill in the outside of the tub about half way up with cypress mulch to insulate mist around them to keep humidity up. Probe the inside of the tub and keep the temps and humidity up and you basically have a small incubator. You can also cut a small hole in the side of the tub for mom to go in and out if you want. they will dry out if you keep them under the heat lamp if they haven't already. You can always buy a small incubator too.