Kusa Mahoushi Chloe no Nidome no Jinsei: Jiyuu ni Natte Ko Dragon to Level Max Kusushi Life

Betrayed by her parents, cast aside by her fiancé the prince, and left to die in a dungeon by the mentor she once trusted—Countess Chloe meets a tragic end... only to awaken in the body of her five-year-old self.

Given a second chance, Chloe refuses to walk the same path of sorrow. This time, she'll use the one thing everyone looked down on—her "useless" grass magic—to carve out a life of her own, far from the chains of nobility and heartbreak.

(Source; Kadokawa, translated)