Her Sweet Revenge by Sarah Bonner

Helena is beautiful, successful, and living in married bliss in Exeter. But she's hiding a secret that could tear her perfect life apart. When the notes begin to arrive, she realizes someone else must know. But what might her husband and his overbearing family do if they find out the truth?
Thea is reeling from her best friend Helena's death. But when she starts digging into the circumstances, she receives a threatening note warning her to stop. She knows her friend's death wasn't an accident. This was murder. And she is determined to get revenge. And everyone knows, it's almost always the husband . . .

Sarah Bonner grew up dreaming of a career as a writer and performer. Instead, she became an accountant. The pandemic gave her the opportunity to answer her original calling, and she completed her first novel, Her Perfect Twin. She lives in West Sussex with her husband and very spoiled rescue dog