Okay, I suppose that maybe the model is 'Disney princess' rather than any princess in history ever, but even then, don't they display a certain degree of agency?
This is A Thing where apparently women display princessiness by performatively giving up agency - sitting in restaurants with castdown eyes being ordered for, not speaking until spoken to - also certain forms of helplessness which suggest they actually need a team of Ladies of the Bedchamber fighting over whose hereditary right it is to put on their stockings and whose to lace their stays....
This boggles the mind of someone raised in an actual monarchy in which there were two princesses around who did not, actually, model docility - I don't think Princess Margaret conceding to the strictures of the day and Giving Up The Man She Loved because he was divorced really qualifies as she'd been going around with him, as far as I can recall WITHOUT A CHAPERONE for some time.
Historian is obliged to point out that for centuries princesses - apart from bearing necessary heirs - quite often had to undertake regnal tasks, either as consort or regent, or at least aid in the general work of Being Royal, even if they did not actually take the throne themselves. Note here conference paper I heard on the preference for female regents in medieval Europe when there was a minor heir.
If you're going to Be a Princess, perhaps do not take Princess Sophie of Anhalt-Zerbst as your model, though on another hand, why not? Girl-Bossing It to the Max!
but we commend Princess Sophia Duleep Singh to your attention.
Observe also the daughters of Queen Victoria: e.g. Princess Alice, who married Louis, the Grand Duke of Hesse-Darmstadt, was known for her commitment to philanthropic work, interested in nursing, met and befriended Florence Nightingale, and also set up military hospitals; Princess Louise who attended the The National Art Training School and designed a full-size statue of her mother as well as a memorial sculpture for the Boer War. No meek sitting about for them.
(I will cop to have read Alot of historical novels in my misspent youth very much contradicting the notion that princessing was sitting still and being silent.)