Maybe you’re new to this story, but there’s been at least ten warnings that if you don’t like ntr then stay the hell away from this. This story is clearly not for you. You want Anna to be something she’s not, so you will forever be disappointed. Anna is Anna, that can’t be changed. You can influence her decision-making but you can’t change her. She’s a very naive woman with some emotional problems, and now that her marriage has hit a rough patch, the sharks are circling. That’s the story. You’ve figured it out - you just aren’t willing to accept it, which is totally fine, but I’ve been clear what this is and what to expect.
By the way, Anna wasn’t aware Mr. S was sniffing her arse. Perhaps I should’ve made that more clear. I’m definitely not perfect and am not a professional novelist… this is something I do with my free time!