I don't want to get embroiled in an abortion relation debate but if I were you and she was fine with having an abortion I would be fine with it as well. If she wanted to have the kid and adopt it or not I would go along with those options too. IMO, ultimately, it is the mother's decision concerning what to do with the child/fetus since most of the raising, birthing etc. requirements are primarily hers to deal with (generalization I know, but there is some truth to this).
Edit: I just read that it was a false alarm, never mind.