Is it permissible to marry a woman from the People of the Book who used to commit fornication but has repented, knowing that she engages in touching the private parts without penetration before marriage? And what must be done to complete the marriage with her?

One of the most important conditions for marrying a woman from the People of the Book is that she be chaste, based on the Almighty's saying: "and chaste women from those who were given the Scripture." The woman mentioned is not chaste, so it is not permissible to marry her. You must repent from kissing and touching and cut off the relationship immediately. One who fears falling into adultery must hasten to marry, and seeking a righteous Muslim woman is better than marrying a woman from the People of the Book due to the religious caveats involved.