Hanako doesn't deserve to be forgiven after pushing her that far. Just because she suffered alone doesn't mean she has the right to make someone else suffer as well.
So... she'll obediently stay in her room because Soo-won is dying??? Just why? Why not just go. Why bother with the person who killed your father and is locking you up in your room? Actually what's the point of all this build up if he's just gonna go and die from illness in the end anyways. wtf