Reborn to Expose My Stepmother

Serena was framed for adultery and drowned by Lady Lowell, who had an affair. Reborn, Serena exposes Lady Lowell. Lady Lowell also claims rebirth. Grandmother imprisons her. Lady Lowell uses a pendant to trick father/grandfather into reinstating her. Serena contacts the Third Prince. She exposes Lady Lowell's lies; Third Prince arrests the Sinclair Family for treason. Serena is ennobled. Lady Lowell struck dead.