Yeah, she didn't improved. She got a villa and money out of the divorce but after some yrs of not improving, she was able to make herself poor.
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It's kind of nice that O!ML's mother was the one who disagree with the divorce. She pointed out how O!ML married when he says marry even when she doesn't like it and then says divorce just cause. She was so mad at O!ML seemingly scum ways, saying she didn't raise him that way. I like it as it implies that she wasn't against the marriage to be just antagonistic but she take the marriage seriously, maybe even more than the O!ML. It sheds a bit of light to evil mother-in-law characters.
I like the author take on both YW and O!ML after they were aware of their fate. It might be me reading further between the lines, but when both of them turn to be more concern about the truth rather than their supposed feelings, it implied to me that what they are hung up on wasn't the 'what ifs' or 'you're my original love', but rather, on whether everything was real and not just a plot imposed on them like puppets.
After YW said to O!ML that 'you are you' and 'I'm me' and the narration says the fog clears up, I think that was when they got liberated. They didn't entangle with each other and finally become their own reality.
(Mostly on O!ML part as YW was wake enough since coming back.)
It was only SLL who was hung up on the plot (taking plot points and copying the YW on the book) and didn't see anyone as real. That's also why she is forever anxious. It wasn't real for her so how could she treat anyone more than characters.
That's why O!ML question whether she loves him or the him in the book that loves YW. And that her love was all a calculation.
YW says that while SLL become the her on the novel, YW herself become different. Later O!ML also change, returning into cool and cold guy but unlike common CEO type, his EQ wasn't in negative. All I can say is that they were real in their world. It usually the transmigrator learning the world and people are real but I like the reverse approach where it was the people living in it wrestling out of the plot and learning they are their ownselves.
There's a lot of things I love about this novel and wish to continue but good things are short.