She may have been caged up during her normal mating time and never mated. 2 weeks is a little long not to be laying eggs especially since she should have been mated before you got her. Contact the seller. If he is any good, he will replace her. Do so quickly. You do not want workers to start laying. The first queen that I received in a nuc had defective wings. I called the seller, he came out and we tried to replace her but it was too late, the SHB took over and destroyed the hive. He replaced it with a full hive because by that time it should have been a full hive.
Thanks Jim, I'm kind of amazed the bee's in my nuc ever accepted her if she's not mated.And not only did they accept her, they haven't attempted to make a queen from the brood I placed in there either. I have plenty of colonies right now and not worried about the nuc falling victim to laying workers. I'm going to keep the nuc closed up for a few days and take a peek to see what has happened and keep you posted. Unless someone has any other suggestions.