Why will Christians commit the sin of premarital all day but not the sin of abortion?

Yes, sin is sin in a christian's eyes. And I do agree that having is just as much of a sin as having an abortion but perhaps she's attempting to redeem herself. Perhaps sin is sin when it comes to God's judgement, but I belief that killing a baby is a lot more immoral than having before marriage. Perhaps this girl is trying to redeem herself. Perhaps she is trying to redeem herself by not committing two sins. Would you say that just because this girl made the mistake of having before marriage, she should just throw it all to the wind and commit more sins? No. She probably realizes that she sinned by having before marriage and she doesn't want to commit another one.