Congrats. Mine lay their eggs in their moist hide (mine contains vermiculite that is moist not wet), make sure she has a dish of calcium with d3 to lick so she can regulate how much she needs, feed her well gut loaded food that is dusted with calcium and/or vitamin powder, she may even eat a pinky mouse once a week.
As for incubating the eggs there are different ways. Before I got an incubator what I did was use a plastic container with a tight fitting lid and used vermiculite as the substrate, it should be moist not wet. How I did this is I put the vermiculite in the conatiner and added water to it very slowly then mixed it around with my hands when it was moist I'd take some and squeeze it in my hand, it should not drip any water but it should pack together. Then make a thumb print in it and put the eggs in the divits. I put 3 small pinholes in the lid
put the lid on them and place them where the temps don't go below 78 degrees or above 89 degrees. Eggs the get to cold can go bad as can those that get to hot. For females you want temps between 79-81, a mixture of males and females 82-85, males 87-90. keeping them at 90-91 you may end up with hot females, these tend to be agressive and don't breed well.
I hope this has helped. If you want more info you can google breeding leopard geckos and there are tons of sites.
Good Luck