Taking Down the Duchess...

Ellsie is the eldest daughter of Duke Rosewood and was set to be the next head of her family. However before she could take the role, her stepmother coaxed her father into making the heiress her daughter then with the help of the girl's husband the Duchess succeed into killing Ellsie.
When Ellsie awakes as her 16-year-old self, she immediately seeks help from her childhood frenemy Prince Lucian in exchange for information.
But what happens when Ellsie finds there is something more important than revenge?
But will she still be able to save herself?
Will she be able to save everyone?