
She's def still very selfish in the novel but the manhwa changed a lot of things, for example this scene, she blurted out about her losing her crown princess title—which she didn't in the novel. Ch 113 is the last ch of main story and I think the emperor died in the next chaoter iirc. In the novel, he lived a bit longer and Diana took care of him everyday on her own, nursing him. Helios and Diana divorced and she willingly gave up her title cause she can't bring herself to have a child with Helios. She was still tending to the Emperor til he dies even tho she's no longer the crown princess. So yeah, I do agree she def is a bit selfless about that part and showed she genuinely cared for him, unlike what they portrayed in the manhwa.

I think in the manwha are taking shortcuts to be more understandable for the readers and shorten the plot. Also, you can hate her as you want.
While reading the novel, I thought that Diana was a criticism about the typical fl written by a check list, so she isn't able to change and is only stucked by the standars of the character, so she won't evolve or change after the novel end.
I read on previous comments that Diana in the novel was not as plain and stupid as she is portrayed here. But was she this selfish? I have never seen a character who is supposed to be healing people be this selfish. She was greedy and selfish since before she looses her healing power.
I really didn’t like how she was worried only for herself and not for the king who has always been kind to her and was defending her all the time.
It serves her right that she spoke her mind out loud.