The story starts out nicely setting the tone for what readers expect to be a wild ride of emotional internal struggling as the princess of a fallen kingdom will find true love with the man who destroyed her kingdom. At least that is what the first few chapters will have you believe.
You could cut out the entire premise of Beatrice being a princess who watched her kingdom fall and it would change nothing about the story. She would still be a well versed slave captured after Elpasa fell and the ML would still feel bad about bringing her kingdom to ruin.
Beatrice decides she doesn't want to have after war PTSD and poof it is all replaced with warm fuzzy feelings until it is convenient to the plot.
Beatrice saves her servants from death by bravely stepping up as the princess, but in turn condemns them to a life of slavery. Beatrice never gets to see the tragic hardships of those maids forced into slavery and instead finds a sort of freedom and happiness of being a slave (even if she can't eat, sleep or drink without permission).
Beatrice does house chores, collects herbs and is on a 1 year trek with the ML ON FOOT, yet the author expects me to believe her skin and hands are flawless and silky, with not a SINGLE muscle blessing this girl? Not even some leg muscle or foot callus from all that walking? lol Even more ridicules is that they walked through a desert with not even a hint of sunburn on her delicate pale skin, why have a desert if NONE of the elements even matter?
The whole story just turns into fan service and your typical Mary-sue falling in love with Mr. Angst while they play with the dragged on drama of "do they know my secret" because the author didn't want to tackle any of the other war related drama.
With all that said, as long as you turn your brain off and don't ask questions like how come someone as fair and dainty as her never got a scar from her abuse, why the author didn't devote an arc to Beatrice overcoming the trauma of watching people die and why she never feels cold or achy when sleeping on the floor so much with no blanket, you'll be fine. lol