Princess Stand-In

I am Elsa, an orphan from an orphanage who was captured by a noble princess as a substitute. Being appreciated by the princess, I had the honor to become the princess's substitute and handle the troublesome chores for the real princess. Until she entered the Magic Academy and became the first in the grade with excellent results, completely reversing the stereotype of a princess as a poor student. Until he was appreciated by the emperor and took office as the governor to manage the land and water, making the originally barren land fertile and wild. Until the emperor died, he personally led his troops to the front line and subdued the Xiaoxiao who were ready to make a move. Finally, as expected, he ascended the throne. However, something always felt wrong. I just want to be a substitute, how can I finish all the work of the real princess?