Winters, Mary. Lady of letters mystery

"Countess Amelia Amesbury has her work cut out. As well as balancing her alter ego--secret advice columnist, Lady Agony--and the blackmailer threatening to reveal her real identity, her sister has also announced she's getting married. It's joyous news, but places all the planning for a high society wedding firmly at Amelia's door. Luckily, her good friend and local vicar Mr. Cross has agreed to the expedited nuptials, so that's one less thing to worry about. Until Cross is found dead at the church. Now in between bridal arrangements, Amelia must follow the clues Mr. Cross left behind. Clearly, he'd made some enemies during his parishioner work, as strange mishaps begin to occur wherever Amelia goes. But when the danger becomes all too real, Amelia must rely on her friends and the handsome Simon Bainbridge to help solve the murder, save the wedding, and Amelia's life too . . ."--