The Villainess's Road to Revenge

To support the family after her father's untimely death, Milvia sacrifices her life force to make gold using the forbidden practice of alchemy. But after being accused of trying to kill her stepsister, Relliana, she is sentenced to death. Just before taking her last breath, Milvia realizes she's been betrayed by her own family and is mysteriously given a second chance at life. Now, with the help of a knight named Deus, she's determined to get revenge, but things are not as simple as they seem...

(Source: Tapas)

Note: Chapter count includes epilogue.