who is the waliy (a legally accountable person acting for a woman seeking marriage) of a woman from the People of the Book?
Her Waliy is one of her agnate relatives, exactly as a Muslim woman. The nearest of these are her father, then her paternal grandfather, then her great-grandfather, then her son, then her grandsons, then her great-grandsons, where the nearest has the priority, and then comes the rest of the agnate relatives according to the order of inheritance. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.