Strong Female Lead / OP

One day a crazy person knocked on my door."
My house is a jewel shop. Someone keeps bringing a person in front of my house. Ojiram was so powerful that he treated me with curses. Others get along with them well.
"Didn't you save the head of an assassination guild leader last time?"
"She's a woman."
"Oh, what about the vicious loan shark who owns the billion mark on Second Avenue?"
"She's a woman, too."
"Who left their carriage in front of a noble's house?"
"It was a noble lady."

Our main character was an unsuccessful romance fantasy novelist when she gets into a hit-and-run then wakes up as the villainess in a best-selling martial arts novel. She uses the information from the novel that she had analyzed in her original life, in order to avoid her death-ending and finding the truth behind what had really happened to her.