I've never read the novel and yet, I'm on Carcel's side. Actually, I've been thinking that Inès was quite toxic because she could only think of her past trauma and thus, impacting the other people (Carcel, servants,...) without even trying to understand on what basis she has an impact. She just appeared too egotistical.
Now, she is finally seeing her past as it is. She is starting to understand Carcel and not just herself. She is starting to be empathetic with others.
She is having a character development, just like Carcel and yet, webtoon readers seems to only want to see Ines's and deny Carcel's.
As a webtoon reader myself, I must say this is just being blind. Really.