Responses
In earlier chapters it says she wasn't able to say nice things. She wasn't able to say or do things exactly as she willed it because of her role. It wasn't until this reincarnation that she was able to change her actions, words, and thus the story.
Thanks dude I've been reading this at like 2am the past few days so my memory of everything has been blurry and I didn't feel like going back.ヾ(❀╹◡╹)ﾉ~
So what I'm getting from this, is that she has repeated this life over 90 times, and not once she thought trying to do something else instead of following the same plot over and over.
Also, I wouldn't be surprised that the brothers resentment both their parents.