This is pseudo-science. Many raped women may do fairly well carrying a baby to term. Many raped women may regret aborting a child conceived in rape. But there is no way on earth that every single raped and impregnated woman is emotionally and physically better off giving birth.
This doesn't settle the morality of aborting a child conceived in rape or of a society's permitting it, but people not already persuaded that it is wrong will be repelled by the false absolute.
Statistics speak for themselves .... abortion raises breast cancer risk by 40%.
National Cancer Institute Researcher Admits Abortion Breast Cancer Link
The question of morality is this:
Is it permissible in your moral structure to kill a child?
The answer to that question alone establishes a firm foundation for the rest of your moral views.