From the information that you provided, you may have grounds for an annulment. You will need a third-party witness to provide an affidavit to the effect that your wife agreed to have children, and in fact, now says that was not true.
If she does not contest the annulment, I believe we will be able to get the annulment.
In any case, you could elect to file for divorce and not wait the year. Please contact me at 212-370-1660 to discuss the matter at greater length and to arrange for an appointment with you and your wife.
Leonard M. Weiner, Esq. /Divorce Solutions