I Quit Being the Marchioness— Episode 64

In her past life, Elaine Preston, the dedicated but childless matriarch of the Marquess Manor, was betrayed and poisoned by the illegitimate children she raised. Reborn on the very eve they are to be formally welcomed into the manor, a hardened Elaine awakens. This time, her eyes are clear. She will play no one's stepping stone; her new life is for her own resolve and retribution.