Make sure she gets plenty calcium and hydration. Laying eggs (infertile or not) can cause an acute calcium deficiency in the cham that may need to be treated with oral liquid calcium.
Did she dig and lay them properly? How big was the clutch. There is always a risk that she may still have a few eggs left inside of her. Unfortunately it's very hard to tell, even after an x-ray and vet examination.
You'll have to monitor her behaviour closely: she should start eating again normally, and she should be passing feces regularly. If not, there may be a problem.
It's not a bad idea to have her checked out by a good herp vet, just as a precaution.
As for my experiences: my female Veiled recently laid a very large clutch of infertile eggs. Not all of them were laid initially - a few only came out a few days later after a vet had administered oxytocin (we weren't certain that there were more eggs in her, but since it had been a large clutch, it was administered as a precaution).
Also, her tongue went limp when she shot it out at crickets. I gave her liquid calcium daily for two weeks which corrected the tongue problem.
But after all the meds and supplements it took quite a while for her digestive system to begin working properly again. She only pooped weekly for about three weeks.
Basically, laying eggs (again: infertile or not) takes a lot out of any female. You have to provide a lot of care and attention in the weeks that follow.
Also, my female was 15 months old when she laid her clutch, so she was fully grown and her bones properly formed. Your girl is even younger, so the depletion of calcium may have a greater effect. Make sure she gets good supplementation.