Stuck in a Time Loop: When All Else Fails, Be a Villainess Volume 2 by Sora Hinokage

After awakening to the inauspicious power of Shadow, Selene Vixent is ready to break free of the endless time loop she’s been stuck in. She’s teamed with the former crown prince, Dier Veldt, and now they’re both working to find an escape from the restraints of their supernatural powers. Their first attempt was unsuccessful, and now an unexpected obstacle stands in their way—Selene’s sister, Soleil, has suddenly awakened to the power of Sun. Thus begins an intense family power struggle.

Will Selene discover the key to seizing her future, or will she be stuck in this doomed cycle forever?