SWEET REVENGE by Fern Michaels

Isabelle Flanders had everything--her own architectural firm, her fianc Bobby, a life she deserved--until Rosemary Hershey stole it all. Took her reputation, her clients, her man, and even framed her for drunk driving--killing three innocent people in the process. The loyal Sisterhood agrees: Rosemary has to be punished, along with the conniving Bobby.