With the help of lord ashram's wonderful mod which allows us to see all options, all i can say is that Anne is pretty much out of control.
There are some "questionable" scenes, like when she disappears at the beach and immediately fucks with another dude but hey, MC can do the same too so as long as they tell each other at the end of the day, it should be all good based on their current open = bang everything we see relationship.
However the one scene i kinda feel detracts is the one where MC tells Anne to stop and not suck off the dad/son golf cart duo and she goes all nuts and runs off to find another penis... i mean... thats really the slippery slope of pure cheating again right?
Good thing i let her go suck em off in my own save, else god knows how much more degen Anne can get...