What is the status of an "Urfi" marriage to a foreign Christian woman, officiated with the presence of a lawyer and the husband's father, and what are the implications of pregnancy and a triple divorce by letter? What is the ruling on both the marriage and the divorce?

A contract of marriage with a Kitabiyyah (a woman from the People of the Book) is not valid without a guardian (wali). Your divorce of the woman in writing is effective if you intended to issue it. A triple divorce counts as three and results in a major, irrevocable divorce (baynunah kubra) according to the majority of scholars. The child resulting from this marriage is attributed to you. It is preferable in these matters that they be presented to a Shariah court or to trustworthy scholars.