Regarding the egglaying container...I use a washed playsand produced by a company named Kings. It comes in a white bag with red, blue, yellow sand box toys on the front. Make it just moist enough to hold a tunnel. The container should be opaque and at least 12" deep x12" x 8".. Filled almost full with the sand.
Are the spots turquoise blue? Does she have mustard yellow splotches on her too?