![](https://pic1.mangapicgallery.com/r/avatar/87/u1280350_50x50.jpg?2)
Well if you think about it the only people to have seen Katrina's nasty personality was Gerald and her brother. It however was never directed towards the prince. While yes Mary saw it but it was only for such a short amount of time. The rest of the cast had never met Katrina before and only know of her based on rumors they heard. We still see that the prince and her brother are still at iffy about her personality change so I think the pacing could be a bit different but it’s not totally not believable.
I do really love this series, but I wish that the development had a few more differences than the original. Apart from the new friend she has, everything else is basically turning out the same way. Even though she had 10 more years worth of having a bad personality, the other characters just started liking her immediately in exactly the same way they did before..
Feel free to downvote if you disagree, this is just my opinion.