Please recommend me a book with a feminine heroine

Hi guys,

Can you recommend me a book with a feminine heroine? She can fight and everything but I want her to be polite, elegant and intelligent? No rough tomboy girl, please, nor someone who like to curse and rude. Hopefully not a spicy book and not necessarily a romance book. I am sorry if all these seems like a demanding recommendation but I've been having a reading burnout lately where I need to have specific things and quirks in my books to finish them. Even a wrong comma in a sentence can stop me from reading in otherwise a really good book. Thank you, guys!