I wish you were right or had some good reason. I don't want Sophia to suddenly become a bitch.
I don't want that either, but the truth is that Sophia is already the slut and won't become one in the future.
At the beginning of the game, Sophia is introduced as a happily married woman with two almost grown children. Sophia has a loving, hard-working, sometimes inattentive, good-looking man at her side.
As the situation is presented at the beginning, there is no obvious reason for Sophia to break out of this marriage. Every time L&P lets Liam make a mistake that one would think would explain why Sophia is moving away from her husband, the situation is then turned around so that the main blame for the marriage's failure lies with Sophia.
This was most clearly seen in the event when Liam lost a third of the house to the mafia in the casino. Not only did Sophia know about Liam's gambling addiction and still left him alone in the casino. The story was then told by L&P in such a way that although Sophia had to prostitute herself to a certain extent in prison for her husband, she enjoyed the whole action and even escalated it. At the end of the day, Liam wanted to reward his wife for her efforts with sex and it was Sophia's decision, or the player's, to reject this "commitment" to their marriage.
If my assumption about Sophia's sudden change in mood on the morning of the next day is correct, then we have the same situation again. Liam makes a mistake, but it is Sophia who benefits from this little inattention to the maximum and then receives the care she needs from her husband. (The blame clearly lies with Sophia again.)
L&P does this all the time with the character Liam. He consistently avoids giving the player reasons why Sophia is cheating on her husband.
In many games with a male protagonist, without the option of a harem, we are often dealing with a male whore who fucks all the women in the city and then at the end of the game chooses a woman, the "true" love decide. With a female protagonist in a game, things are apparently more complicated. The mostly male audience has a hard time dealing with a woman who lets every man in town fuck her and then returns to a monogamous life with an LI. She is then a whore for whom there is no turning back in our minds.
So it's hard for many people to imagine that there are romantic love interests, Sam and Alyssa, who are betrayed as they develop, just like Sophia's husband Liam.
So what remains at the end? Either a woman who is a slut or a woman who wants a new life. Who wants to start all over again, a life in which Liam no longer appears. You can also interpret Sophia's desire for another child as a symptom of radically starting over again.
Of course I know that this is just a "cheap" pornographic picture story and therefore no one should take my mind games too seriously.