Congrats, Pat!!
It is fairly common for the first eggs of the season (especially for first year breeders) to be infertile. My first year, the first clutch was infertile. But by the time I was really ready to give up on them, the next clutch was ready to hatch!
Now, feed her lots of yummy mealworms and get ready for round two in 2-4 weeks!! I will look forward to some pics of little Bell enigmas running around your incubator!