Dear Debbie by Freida McFadden

Debbie lives with her husband, Cooper, and two teenage daughters, Lexi and Izzy, in suburban Massachusetts. When things start going wrong in her daughters' lives and she's fired from her job as an advice columnist at the local newspaper, she decides to exact revenge upon those who have wronged her family. Once Debbie starts down this road, she finds it hard to stop... A novel that's hard not to finish in one sitting.