It is wrong to blackmail someone.
Jane finds out that her best friend Mary's husband is having affair with his secretary.
Jane wants to help her friend Mary.
Jane declines any monetary gift from Mary's husband instead urges him calmly to quit his affairs.
Jane confronts Mary's husband to cut off his relationship with his secretary and also asks for money to not tell Mary.
Jane gets thanks and assurance from Mary's husband.
Jane gets arrested for extortion.