
Kael already went to the palace to save Diana and successfully protected her position while Hestia is at the balcony staring at the sky thinking of going back to her original world. Then suddenly it kicks her that if she died will she be able to go back. Then she looked down and saw Kael's carriage and feeling depressed that he still chooses Diana in this world as he was the 2nd ML then thinking of jumping then Kael ran towards the balcony when he saw Hestia attempting s*icide and ran towards her.
You can read the rest here:
https://www.novelreads.club/novels/for-my-derelict-favorite/fmdf-chapter-32/
They should have followed the novel than changing the story. The balcony scene in the novel is way dramatic and realistic (not too mushy) and I think it's better
This change makes in cringey in a way lol