Her behavior is exactly the kind of activity that led to the zero respect for marriage that then led many people to think that homosexuals marrying was a reasonable thing.
That part of what you say is true...
She’s every bit as decadent and immoral as the gays are.
That part of what you say is untrue...
If there’s a difference, adultery is the worse of the crimes according to Biblical law. Adultery is specifically referenced in the Ten Commandments, which are the most basic and important of the laws of the Bible. It is then also listed again along with homosexuality in the laws covering sexual prohibitions. Adultery is not only a transgression against prohibited sexual behavior but also a crime against the institution of holy matrimony.