"The Princess" is one who has earned the title by the sacrifice of ones self. She has endured countless hours, days and years of abuse. She has been stomped on spat on and forced to endure heinous atrocity's. But through it all she was able to persevere. Her ability to pull herself from the dooms of hell is a statement as to her strength to better her self.
Not only did she not ask for the title but refused to except that she was different and had earned this title.
Thus she is called “The Princess “