How would an outsider know if someone was repentant? Because the teacher brought her child to school, that doesn’t mean she is unrepentant? Maybe she is very repentant, and just plans on being a single mom now, and never having premarital sex again. We don’t know that for sure, but if she decides say, to live unmarried with the father of the baby…then, I don’t think it makes sense to keep the teacher on at a Catholic school. But, if she realizes that premarital sex is wrong–and decides to lead a chaste life from here on out…then, wouldn’t that be all she should have to do?