first off, Tiger, you didn't mention if there was a male living with the female and if you actually witnessed any mating activity. If you caught a gravid female, it is possible due to the stressors of captivity for her to prematurely abort a clutch. Also, female reptiles do have the ability to ptoduce infertile eggs. they are referred to as slugs.If you think the eggs were fertilized, something may have happened during the incubation period to cause them to go bad. The most common problem is fungal infection from too much humidity or some anaerobic microbe attacking the eggs from not enough air circulation. Generally if eggs succumb to these, they were probably weak to begin with.