I just want to comment on the following 2 points, but before I do, let me just say that I agree, a human should not be treated as trash. It was wrong on all levels to throw that baby away in the fields.
This can be a very lengthy discussion, but the short answer is that a fetus can be aborted if there’s no “rooh” in it.
Islam Question and Answer - Abortion of a foetus resulting from a zina relationship
Islam Question and Answer - Ruling on aborting a pregnancy in the early stages
I have heard of a few instances where couples ran away. The girls were not killed but the boy was beaten the crap out of. So saying “man is not even touched” would be incorrect, there are always exceptions.