Responses
Short answer: no. I can't read Korean but from the raws, the heroine desperately wants to be friends with the FL, that much is obvious. She tried back in school but it didn't work so well. Now she's completely enamoured with the FL to the point of being jealous of the ML. Other than a few dark expressions of jealousy, she's shown to be an upstanding person. The real bad guy here is the red head that was talked about a few chapters ago. That guy is crazy aggressive.
I bet 100 dollars that the heroine of the story’s gonna be a bitch. She’s for sure going to plan several ways to break up the Fl and the Li. Maybe by starting a rumour, poison, and kidnapping??