While I personally feel her interest in what he and other women do slowly started earlier, during the glory scene but just never became apparent or obvious until she became friends with Emma but just slowly. But I see what you mean also about ch 14 after that talk cause it did seem like instead of slowly showing some interest here and there it did feel she did show it more.In fact, Anne does not show interest in what the MC does, only when she meets Kelsie and does it to block him (what a bitch) and only in chapter 14 after the magical conversation is she when she begins to have interest in what he does and He even stops having sex away from the MC and also has two threesomes with another woman and the MC, something he never did until that moment.
I cant judge her on the Kelsie thing tho need to replay those parts as I dont really recall how she blocks him other than getting jealous and saying something to Tony. Which I did think was fair since they work together + as the player we know how she is actually a threat. However It also did feel like it came out of nowhere since I don't recall Kelsie doing or showing interest toward Tony infront of Anne that was different towards other times they had sex with other people infront of one another that would make her jealous other than they work together. But she was fine when Tony told her about having sex with another co-worker Oliva think her name was. So yeah it seemed to me like it just came out of no where from Anne. Like I said id need to replay that part.
You know that's one thing I love about these conversations on these game while no one see everything the same. I like how people interpret things different as well.