Real women don’t commit violent felonies.
Again, which is the greater crime?
Our legal system takes human nature partially into account. A crime of passion is usually after someone finds their spouse en flagrante.
The court has some understanding when a married woman with two babies at home finds her husband has been lying to her and sleeping with another woman. (It should for a man in such a situation, too, but it would have to be some kind of house-husband married to a famous woman.)