She has been progressively widening and is now waddling. This pair has been on paper towels in a RM bin because they were close to a BTS that came up with mites. So, I am moving her into a separate bin today and need to know how to create a nesting area. What should the nesting mix be? Potting soil and sand or just sand or potting soil? Will she dig and tunnel like collareds or beardies? Also, at what temps do I incubate the eggs?

This is very unexpected! I thought fire skinks were HARD to breed in captivity!