The sexual act between a man and a woman is not intrinsically disordered. It was ordained by God for procreation. It's use outside of marriage does not in any way confer disorder on the act per se, since retains its life giving power.
The sin arising as a result of extramarital relations is particular to the perpetrator(s). It is their behavior which is "disordered", not the act.
Sodomy is intrinsically disordered by its very nature.
She's pretty active in the prolife movmeent and knows lots of conservative Christians, both Catholic and Evangelical. She would never ask "permission" or "affirmation" for what she decided to do, but, since she was curious, she did inquire in her circle of friends to find out what people thought. She said pretty much everybody thought she was wrong to get inseminated: but the Evangelicals tended to say, "Well, at least you didn't have sex with some guy!" and the Catholics tended to say, "Well, at least you should have had sex with the guy!"