Hi! Newbie here

I liked "Revengers Comedies " a lot. But I have the following questions that still linger in my mind, in the scene near the end, with the elderly man talking about giving Henry Bell a second chance, there is a elderly woman playing the organ at the back of the church, this is Karen right. Ok, here are my questions, does she prevent Imogen and Henry from getting married? How does she do this? Does she reveal that she is Karen? Does she burn the church down with herself, Henry, Imogen and all the wedding guests in it?