Does a Kitābiyyah woman become permissible for a Muslim man if she pronounces the Two Testimonies, knowing that she doubted the Hereafter before pronouncing them?

For a marriage to a Kitabiyah (a woman from the People of the Book) to be valid, she must adhere to one of the religions of the People of the Book. If she is an atheist, her marriage is null and void. However, if the marriage was contracted under the belief that it was permissible, then the children's lineage is attributed to the husband.

If the woman testifies to the truth and observes the rituals of the religion, it is permissible to marry her, with the contract being renewed with the permission of her Muslim guardian (wali) or someone acting in the capacity of a Sharia judge, such as Islamic centers, or by the agency of a just Muslim man if such an authority is not available.