As I said before, its too much open to interpretation to make good assumptions about dialogue so early on. We literally dont know anything about Bella's husband and the dialogue in the library can be seen in multiple ways. For instance, a foreshadowing of Bella guilt over cheating her maimed (or maybe on coma) husband, leading to her hurting (or maybe killing herself)... or something dark. Thing is... we dont know. "Help", as far as we know now, can be for every character in the game. One thing is for sure, cheating on a absent husband is one hell of guilt trip to this lady and a huge deal. I am pretty sure there will be some sort of consequences... I am just not sure in what extent and what shape.
Here's my two cents, Bella's husband is out of the picture but now by his own volition, meaning he's alive but somehow unable to be with Bella... like I said, either maimed or in a coma. But Bella loves him still (all the "Carnal" talk and what not), has "urges" she can't control and she has a massive guilt ridden persona that can will have a huge impact on her. The outcome will be dark, but I think its more about personal demons than doing harm to others. Bella just slowly growing into acceptance her husband is not healing back/waking up from a long coma... until he is, and the "fun" she had with the MC is going to explode in her face, but because of her own guilt and not the actions themselves.