Strong fl manga/manhwa i dont remember anymore. Please help.

So the description will not be accurate bc it's been a good 8 mos since i last read this, pl3ease bear with me . So the fl is a like a daughter of a duke, i think, she's one of the candidates to become empress of an evil king. So here's the main part she brought along her maid with her and they switched identities, the maid became the princess and she became a female knight. And then the maid was so scared that she's trying to convince the real princess to leave bc the other ladies trying to become empress will do everything to get the title, but then the maid died bc she tried to escape. The end huhu please help. （/TДT)/