Responses
Basically, MC got trauma after being used,abused, neglected and raped by the Blue Prince. But even after regressing and starting all over again, all development after 100+ chapters is seemengly being reduced to her romantic feelings.
Plus the Ruve, the blue prince now emperor, explicitly denied her wish of inheriting the house and ignores her requests even after the convenient plot device of seeing her sensitive letter of what happened to her b4 she went back in time.

He didn't respect you enough to end the engagement like you wanted and lied about having done it. Yet you're actually happy about that, that he is being completely selfish in keeping you by his side despite what you wanted.
At least Carsein respects you and wouldn't tie you down and is always encouraging you whenever you're depressed and stuff, yet you'd rather go for Ruve despite your trauma, despite the fact that he lied to you about your freedom. That's not cool. What if you were dating Carsein at that point due to assuming you were free? Then Ruve would reveal that you both were still engaged. That is NOT ok, it's manipulative and possessive af.