The Villainous Family Is Against Independence - Chapter 12

I don’t understand where the author want to bring this story. It’s not like she is transmigrated newly into eldia body, she is born as her. So logically even if there is a slight change on her attitude wouldn’t enough to change her demeanor. But the other characters emphasize again and again how big her change is, at first I thought that the author have a unique perspective in this story but at this point I might just conclude it as a plothole