Summary:

As proud daughter of House Monique, Aristia was raised to become the next empress of the Castina Empire. But with the appearance of a mysterious new girl, everything has fallen apart: the Emperor has turned his back, and Aristia’s miserable life as a lower queen is cut short by death. However a second chance to change her fate sees her reborn ‒to 7 years earlier! “Is this a dream or reality? Will my destiny repeat?”

Resources:

https://www.novelupdates.com/series/the-abandoned-empress/