Well, I don't see this as a question of "forgiveness". Charity requires taking care of the daughter, since her entire life she believed the man was her father, and charity would probably require keeping the mother around (again, for the sake of the daughter). Problem with the "forgiveness" aspect is that the woman doesn't appear contrite ... especially if she threw that in his face during an argument, as if she relished having wronged him that way. Also, given that they were married for 10 years and the daughter is 9 going on 10, she was cheating on him "right out of the gate", which does question her motivations in getting into the marriage. Until she shows actual sincere contrition, it's not a question of forgiveness, and she should be relegated to the couch for the rest of the time she's permitted to stay in the home that the man is paying for. Also, the question comes up about how often she may have been unfaithful over the entire 10 years. Perhaps for the future ones she was more "careful" not to conceive. Also makes me wonder why the married pair don't have a child between them over the course of 10 years.
Good points Lad!
We can talk about "Forgiveness" when she is contrite. Even God, who is perfect, doesn't forgive us *anything* until we are actually sorry for having done it (including cessation of committing said offense).
And if she was unfaithful (and got away with it) 10 years ago, it makes you wonder how many times she was unfaithful during the past 10 years. After all, she didn't exactly conceive any children with her husband. Was she on the pill? It's not exactly a rare scandal for a woman to be on artificial birth control these days (though it should be!)
And the timing of the infidelity shows an above-average problem. Possibly invalidating the marriage. I mean, this wasn't "The Seven Year Itch" or some other common human phenomenon; this was right at the BEGINNING of the marriage! Did she intend to get married (an exclusive union) to begin with? Her behavior is a higher level of messed up than the classic "I'm sick of the same old spouse".
And yes, it would be charitable to think of the daughter's emotional, mental, and physical well-being. Charity is about what ISN'T owed in justice, but given anyway.
And another point:
There are worse fates than being single for your whole life. This poor guy. I didn't even catch this point, but they've been married 10 years and the couple has no children between them? Just the one girl, who wasn't even his? Something seems amiss in that marriage/relationship. I think it's safe to conclude this man married very poorly, for whatever reason (was she "cute"? was she "hot"? was he desperate?) Very sad.