Help finding a rommance

Hi this is a straight romance mc has pink hair, I think red eyes. She was pushed into this weird hell area by someone her dad hired when she was young and fought to survive. She comes back with a vengeance and I think the first chapter is her meeting, I think the duke, who has black hair and is the rival to her family. And she becomes a knight I think… and I think her name is Rena or something… it definitely starts with a R. Thanks in advance!!