From what you write, you have never had a steady girlfriend and/or have never made such a stupid decision to cheat on her.
Because the pangs of conscience and feelings of guilt don't go away, even if you've fucked your lover umpteen times. Only psychopaths are so emotionally uninvolved.
It's not that L&P doesn't find the taboo-breaking in Sophia's inner monologues arousing, but it's only natural that thoughts that testify to feelings of guilt keep cropping up.
Her domestic situation in particular, with two children and a husband who isn't an asshole but is simply too carefree and is currently riding a wave of success, would not make it credible if Sophia, after 14 virtual game days, lacks any feeling of guilt.
But it should also be mentioned that what you are criticizing is caused by the fact that there are so many individual routes that apparently have nothing to do with each other, and that's why Sophia's inner monologues and feelings of guilt feel like endless repetitions. But this is just bad writing by the author.