ANy Raw

https://www.lightnovelpub.com/novel/the-villainess-enjoys-her-seventh-life-as-a-free-spirited-bride-hostage-17031322

This is the novel and its already have 227 chapters

spoiler
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
it turns out that there are a lot of misunderstandings n the prince's family. at one point the prince's brother shows up and kidnaps her to pretend he hates his brother, but actually he loves him and wants him to take over the throne.