Read the scene between Sophia and Alyssa in the coffee shop about being bullied. But you must play the scene between Sophia/Alyssa in the coffee shop. Also, read the Sophia/Dylan scene in the bedroom change scene. Another hint applied to the twist that doesn't make sense with its removal.
Also, keep in mind he puts hints in the story in other paths that gives some background details. For example, The reader may not know that Sophia is sexually frustrated unless you play the club scene and read the text between Sophia and Patricia when Ellie leaves. Or before its removal, The twist played out in the background unless you sent Dylan to boarding school. It's not about different things happening; it's how the story comes together by selecting another path. That is why L&P wanted you to choose other paths to see how the story comes together.
This is my point about playing the novel unchained for her to be corrupted because all the scenes would depend on each other to advance her corruption. Suppose you were to play Sophia/Dylan's route only. In that case, there is no way, after three tasks, she would even be remotely corrupted to advance her scenes with Dylan, considering the levels of those tasks, as Aiden would be the primary source of her corruption. So I believe all the scenes are dependent on each other. For example, regarding the museum guys in the next PD, how far do you think she will go with them since they only met with their scene two PDs weeks ago?
If Sophia and Patricia give the museum guys an HJ, BJ, or something else, Sophia would have to depend on other scenes to prove that corruption makes her go that far. Limiting that corruption to one path makes it hard to see how that scene would play out without a flip of the switch if you consider that she was a devoted housewife.