Keerthi hates raghav because she feels she lost her father and brother because of him. She also feels he isn't a good person and gunda. She hates his personality
Keerthi hates pallavi because she was Smart enough to unravel the Mandar accident and she made sure keerthi accountable for supporting sunny. She also hates pallavi that she trapped her to get her love arrested.
She feels raghvi is just attraction couple and they don't have anything on their relationship. She feels their love is just infatuation. She don't respect their marriage.
Until she done with last drop of vengeance , no one can stop her. She will get the revenge hook or cook from raghvi. Redemption is something isn't fitting for her now
She will also realize everything hard way and her happiness will last for just matter of time.