Hello,
Are you talking about fertile eggs I assume? If you mated her, it is usually approximately 4-5 weeks before she will lay any eggs.
You can make a laybox out of soil & vermiculite or perlite roughly half of each in the laybox. It needs to be around 12 inches deep so she can burrow. The mixture should be wet enough to hold into a burrow but not sopping wet.
Tracie