In order for hadd punishment to be applicable there needs to be 4 witnesses. If there are no witnesses, then Allah has concealed their sins and they can make tawba.
Unless you have witnessed with your very eyes, her committing zina, you cannot call her a zani. In fact, you too are eligible for hadd punishment as you have no proof.
You're a hypocrite, if she was a bollywood man who went back to following his deen and married a religious woman, you would congratulate him.
There is nothing sincere about you.