She didn’t actually change in this second life, it was just that in the first one she wanted to act all mature for his father to notice her, she wanted to be good at everything and like be a perfect lady, so to summarize, she restricted her own feelings because she wanted to make her father love her or praise her for being at least good at something.
In this second lifetime she gave up, and started to have like a new life, try things she’s never done before, so she’s like a baby in all this thing of dating and innocent cuz, if u remember, up till now she has never gone out of her house and worked or studied. She lived in her own world, never been to dances or social gatherings, she’s like a little girl dreaming with finding her true love, she has to experience that not everything is as it seems. She’s smart but has no experience.