Okay so who’s wrong?

So my friend got a message from a guy hitting on her. She calls him out on being married & he said he doesn’t care, he just had to.... so then she says she’s going to send the screenshot to his wife.

He blocks her from his wife’s profile but she loathes cheaters so sent it to his mom.

The mom says “he got hacked.”

Well the girl responds back basically calling my friend names saying she needs to shut up & that it’s a wife’s duty to deal with anything her husband does & mind her own business & to stay out of her life, etc etc. My friend was like “ok? I was telling you your “best husband in the world” is hitting on me, I can’t imagine how many other girls?”

Well saw that she updated her fb to say she’s pregnant but she’s calling my friends name over my friend 1. Not entertaining her husband 2. Letting her know.

Is the wife wrong? Or my friend for trying to tell her?