Well, try to delve more into it then, and there, you will find the answer

why? if she already confessed in the intro, yes, she was manipulated, but only because, based on the description of her actions, she is stupid and ungrateful. rebirth does not give intelligence, even from the first chapters, it is clear that she still did not realize her stupidity, until they put it in her mouth in plain text, with all the facts

That's it, people make mistakes. She was manipulated since a very young age, yet she still remained so stupid till her death, that's the reason why she was given a second chance, to correct the mistakes she had made, and live a whole brand new life. Or do you expect a very smart person to be manipulated to such extent? Of course, I wouldn't actually ask you to read it, you might become even more annoyed. I tried my best anyway, but we have different tastes so it's understandable.

You can check out my new book though, I got a lot of bad comments on this one already but I can't just let it go or stop updating for the sake of people that read it. New book: Transmigrated With A System: I Became The Billionaire Contracted Wife. Got loads of good reviews so you might like it.