The Sacrificial Princess Satisfies the Vampire Duke's Thirst With Sweetness - Chapter 5

Is it possible that the chapters are not in order of the storyline….
This has potential
Yet the plot itself has holes for example the main reason why the family truly hates the female lead…
Who made her ill… what is the illness… cause and effect and possible health + symptoms + history of illness…
And is there a cure
Will she emerge from her sacrifice as vengeance female lead.