Marrying An Atheist Woman
If you understand the rationale behind marriage then its easy to understand why it will not be allowed. Mother has lot of influence. Even though conditions may not be right but her influence on kids cnanot be denied. It would be total conjucture to assume what would have happened at that time. So I wont comment on it. We cannot declare anything sin unless we have argument from Quran o sunnah. Only God can decide what is bigger sin.